Connection requirements
AI tool network requirements
Being able to open the homepage doesn't mean you can log in, generate content, or upload files.
AI tools often rely on several connections: the browser loads the page, an identity service handles login, a chat API streams responses, and attachment services process images or documents. If one step doesn't use the expected exit IP, the homepage may work while submitting a prompt fails. Troubleshoot the specific action that fails rather than relying only on whether your client says it's connected.
Regional eligibility: Check each tool's rules
Providers may determine eligibility based on your exit IP, account settings, billing details, and organization policies. Availability can also vary by product and feature. Before choosing a route, check the tool's current official list of supported regions. A network exit cannot change account eligibility and should not be used to evade platform terms. If you see a regional restriction, check the applicable rules before investigating network settings.
IP risk checks: Keep your exit IP consistent
Activity from shared exit IPs, frequent region changes, and repeated login attempts can trigger additional checks. Using the same eligible route can reduce variables while troubleshooting, but it can't guarantee that a platform won't ask for verification. If you get stuck in a verification loop, don't keep switching countries and retrying. Check your browser session, system clock, and login method, then follow the instructions for your account.
Long-lived connections and streaming: Check the full task
Chat responses usually arrive progressively, rather than appearing all at once after generation finishes. A dropped connection, a sleeping device, a local network change, or a proxy client reloading its configuration can leave a response unfinished. To see whether a route works for your needs, check that a normal conversation completes, attachments upload, and follow-up prompts work—not just how quickly the page loads.
Choose a route for your use case
Tool and route comparison
The table below highlights configuration priorities. It is not a list of supported regions or a guarantee that a route will work with any particular platform.
| Tool | Route priorities | Connections to check | Common symptoms |
|---|---|---|---|
| ChatGPT | Meets the tool's current regional requirements; keep the exit IP consistent where possible | Login redirects, chat streaming, and attachment uploads | Repeated verification, interrupted responses, failed uploads |
| Claude | Meets account region requirements and supports continuous text streaming | Authentication, long conversations, and document requests | Restricted login, pauses in long responses, document processing errors |
| Gemini | Consider both the exit region and Google account eligibility | Account login, product pages, and generation APIs | Page loads but features don't work; account eligibility warning |
| Copilot | Covers the product entry points you actually use and supports ongoing interaction | Microsoft account or organization login, and the relevant app | Works in browser but fails in app; insufficient organization permissions |
| Midjourney | Supports task submission, image loading, and downloads | The web or Discord entry point you use | Task submitted but image doesn't appear; download interrupted |
| Cursor | The editor process uses the expected exit IP and maintains a stable connection | Browser authorization callback, editor requests, and model connection | Login succeeds but editor appears offline; generation disconnects midway |
Different product entry points can exist within the same tool. Copilot in a browser, Copilot in an Office app, and GitHub Copilot don't necessarily share accounts or permissions. Before troubleshooting, note the product name, login method, and where the error occurs, then consult the relevant documentation. Midjourney tasks taking time to complete doesn't necessarily indicate a route problem: if the task status is still updating, distinguish server-side queuing, generation failure, and image transfer failure.
VPNFK covers 90+ countries and 250+ routes. This range gives you more options; it does not mean every region meets every AI tool's usage requirements.
Account setup
Checks for sign-up and login
Before signing in, connect to the route you plan to use and check that your system date and time are correct. Open the tool's official sign-in page and confirm whether you're using a personal account, an organization account, or third-party authentication. Don't switch exit IPs before verification is complete or submit the same action repeatedly in multiple windows; that makes session issues harder to diagnose.
If you return to the login page after authorization, check whether your browser is blocking required cookies, pop-ups, or cross-site redirects. Privacy extensions can affect authentication, but don't leave all browser protections disabled just to troubleshoot. Compare with a separate browser profile, changing only settings related to the tool, then undo any changes you don't need once you've found the cause.
If the page says your account isn't eligible, your organization hasn't authorized access, or you need to resolve a billing issue, follow the tool's account process. Changing routes can't grant those permissions or restore an account restricted by the platform. VPNFK and AI tool accounts are separate: VPNFK doesn't require an email address; you can create an account with a username and password. That doesn't mean external AI tools use the same account requirements.
Know which access method you're using
Differences between web and API connections
Web: Focus on the browser session
Web chat depends on page resources, your login session, and the generation API working together. Check whether your browser's proxy rules cover all of these requests, then note whether the error occurs before login, when you submit a prompt, or while a response is streaming. If only images fail to load, check their resource requests separately rather than assuming the entire chat service is down.
API: Check access permissions separately from connectivity
APIs use separate credentials, usage limits, and endpoint permissions. A web subscription may not include API access. A timeout and an authentication failure are different problems. Save the error type and response body, check the official API documentation, and then determine whether you need to change your network, credentials, quota, or request parameters.
Streaming APIs also require the client and any intermediaries to handle data as it arrives. If responses consistently cut off at a similar point, check application timeouts, reverse proxy buffering, and keep-alive settings instead of repeatedly resending the full request. Automatic retries can duplicate tasks or incur extra usage. Start with a short, non-sensitive input to pinpoint the problem, then resume your normal workload.
Don't post API keys, full request headers, or links containing session information in public forums. When contacting support, share the tool name, the stage where the issue occurs, an error message with sensitive details removed, and whether the problem affects only one app. Network troubleshooting doesn't require your full account password or API key.
Developer workflows
Command-line, IDE, and CI setup
Command line: Your terminal may use a different route than your browser
Terminal programs may ignore the system proxy and use their own settings or environment variables. First check which proxy methods your SDK, command-line tool, and networking library support, then configure them according to their documentation. Whether HTTP_PROXY, HTTPS_PROXY, and NO_PROXY take effect depends on the program. Setting an environment variable doesn't prove that requests are using the proxy.
Check that the proxy protocol matches your local client's listening configuration, then restart the target process. If you're using a container, virtual environment, or remote terminal, confirm that the configuration is available in that runtime. A loopback address on your computer points to your computer; inside a container or on a remote host, it points to that environment instead. You can't copy the same address across environments without checking.
IDE extensions: Find out where requests actually run
Successful browser authorization in Cursor or another editor only confirms that the authorization page completed its flow. The editor's main process, extension host, and remote development environment may each send requests. For remote development, first determine whether model requests run locally or remotely, then configure the proxy in that environment. After changing settings, reload the relevant process and check the app logs for connection errors.
CI: Configure networking and credentials for the runner
Automated jobs run in CI runners and don't automatically inherit the VPN connection on your personal computer. Check the runner's environment, your organization's network policies, exit region, and the API provider's rules. Store credentials in the platform's protected variables or secret management feature. Redact authentication details from logs and set limits on retries to avoid repeatedly replaying failed requests.
Company-managed devices may also be subject to centralized proxies, certificates, or access policies. Don't disable certificate verification to get an extension connected or change organization network settings without permission. For certificate errors, check the system clock, software certificate chain, and any organization-required certificate settings, then consult your administrator.
Troubleshoot by symptom
Common symptoms and troubleshooting steps
Homepage loads, but submitting a prompt just spins
Check the tool's official service status first, then confirm that generation requests use the expected route. If other sites work and only this tool fails, check browser extensions, proxy split-tunneling rules, and account notices. Compare with a short prompt while keeping the account, browser, and local network unchanged. Change only the route so you don't introduce multiple variables at once.
Response stops midway; reloading doesn't restore the full answer
This may be caused by a local network change, device sleep, proxy reconnection, an application timeout, or a service-side issue. First check whether the task was saved in your conversation history, then decide whether to retry. If this only happens with an API or custom app, also check streaming response handling and intermediary proxy settings.
Regional warning or repeated verification prompts
Check the tool's current supported regions and account requirements first. Make sure your exit IP didn't change during login and review the required browser session settings. Don't respond to verification by repeatedly changing regions, using multiple accounts, or automating login attempts; these actions may increase risk signals. Contact the tool's official support channel about account restrictions.
Web chat works, but the API says access is denied or the quota is exhausted
First distinguish web product billing and permissions from those of the developer platform. Check the project associated with the API key, model permissions, balance or quota, and the endpoint you're calling. If the server has returned an authentication or quota error, changing routes alone usually won't fix it.
Rate-limited or account restricted: will changing routes help?
Rate limits may be caused by request frequency, concurrent calls, account quotas, or activity from a shared exit IP. Account restrictions may also involve eligibility or usage policies. Follow the error guidance, reduce repeated requests, review your calling code, and contact platform support. A network service can't guarantee that rate limits will be lifted or an account restored. Not every rejection is a route problem.
For a step-by-step review of account and development environment settings, read the AI Tools Guide →. For help importing a client configuration, see the Quick Start Guide →.
Routes and usage
Choose a route for your workflow
For everyday web chat, choose a region that meets the tool's rules and supports complete, stable conversations. Keep the exit IP consistent during each work session. For documents, images, or generated files, check uploads, previews, and downloads too. For developer calls, identify the request process and runtime before comparing routes; changing routes won't help if requests never pass through the client.
VPNFK supports Windows / macOS / iOS / Android / Linux, with unlimited devices online at the same time. Each device still needs its own client and app configuration. A working computer doesn't mean your mobile device or remote host uses the same exit IP. Download clients and retrieve subscriptions from the user panel; sign in to access your subscription.
Monthly plans: ¥9.9/month for 60GB, ¥18/month for 250GB, and ¥28/month for 500GB. Data resets monthly on the activation date. Mid-cycle upgrades are prorated by the remaining days. If you don't use the service continuously, compare data packs: ¥158/300GB, ¥358/1000GB, and ¥658/3000GB. Data lasts until used and never expires. Choose based on your actual uploads, downloads, and other internet use—not just the number of chat sessions.
Pay by Alipay / WeChat / USDT. A 60-day no-questions-asked refund is available. VPNFK network plans don't include subscriptions, API quotas, or organization authorization for external AI tools. Check eligibility for your chosen tool, verify the connection, then choose a plan based on your usage. This helps avoid mistaking an account issue for a network problem.