Common Proxy Errors on Android (v2rayNG) and How to Fix Them

- The server is down, the address/port is wrong, or a firewall/NAT is blocking the connection.

- The connection times out if the server is unresponsive or the network is poor.

- Check if the server is online and your address/port is correct.

- Disable any firewall or security software that might block it.

- Test your internet or switch networks.

- If it persists, contact ChitaVPN support.

- V2RayNG cannot connect to the local proxy due to incorrect settings or port conflicts.

- The local SOCKS5/HTTP proxy port is already in use or blocked by another process.

- Verify your proxy configuration, address, and port.

- Restart V2RayNG or choose a different local port.

- If the issue remains, contact ChitaVPN support.

- The imported config file is invalid or not in proper JSON format.

- Make sure the config is valid JSON and well-structured.

- Use an online JSON validator if needed.

- Try a different config or get a new one from your provider.

- If it still fails, contact ChitaVPN support.

- V2RayNG cannot verify the TLS certificate (self-signed, expired, missing CA).

- Install or trust the self-signed certificate if used.

- Check if the certificate is valid (not expired).

- Add any required CA certificates.

- If unresolved, contact ChitaVPN support.

- The Trojan server and V2RayNG are using mismatched versions, causing connection issues.

- Update both server and client to the latest versions.

- Ensure the config format is compatible.

- If it continues, contact ChitaVPN support.

- V2RayNG cannot resolve the server address due to DNS problems.

- Verify your DNS settings in the app.

- Try public DNS (e.g., 8.8.8.8 or 1.1.1.1).

- If you can’t fix it, contact ChitaVPN support.

- The server actively rejects the connection (offline server, firewall rules, or closed port).

- Ensure the server is running on the correct port.

- Check firewall rules or IP restrictions.

- If still refused, contact ChitaVPN support.

- The necessary port (often 443) is blocked by your network or firewall.

- Open/unblock the port on your device/server.

- Use a different port (e.g., 80 or 443) if possible.

- If it remains blocked, contact your network admin or ChitaVPN support.

- The UUID in the config is incorrect or missing, causing authentication failure.

- Make sure the UUID matches what your provider gave you.

- If missing, add the correct UUID.

- If unsure, request a new one or contact ChitaVPN support.

- The VPN permission is denied, the device doesn’t support TUN, or there’s a conflict with another VPN app.

- Grant VPN permission when prompted.

- Disable any other active VPN/firewall app.

- If your device lacks TUN support, try another mode.

- For further help, contact ChitaVPN support.

- V2RayNG lacks the permissions to create/manage connections, or a feature requires root.

- Give V2RayNG all required permissions.

- If using root-only features, ensure your device is properly rooted.

- Disable advanced options if you can’t use them.

- If you still have issues, contact ChitaVPN support.