You click connect, the spinner spins forever, and finally "connection failed" pops up β this moment is the most frustrating. Don't rush to uninstall. The Green Tea VPN support team compiled the most common connection issues; follow the sequence below and most cases are resolved within six steps.
First, a classification: connection problems usually come from three layers β local network, client state, and server node. Troubleshooting "near to far" locates the issue fastest.
Six-step troubleshooting flow
- Check local network: Open a normal website in a browser to confirm the device can access the internet. If even a normal site fails, the issue is the network itself, unrelated to Green Tea VPN.
- Switch server: Try a different region to rule out a single-server fault. This is the highest-frequency fix for "connection failed".
- Restart client: Fully quit the client (not minimize), reopen and reconnect. Residual process state sometimes blocks connections.
- Switch protocol: In restricted networks (office, campus), UDP may be throttled; switch to TCP encapsulation or IKEv2.
- Update version: Old versions may have compatibility issues after server upgrades; upgrading usually resolves it.
- Contact support: If all else fails, contact 24/7 support with the error code for precise diagnosis.
Common error code reference
| Error code | Meaning | Suggested action |
|---|---|---|
| E1001 | Wrong account/password | Re-enter or recover |
| E1002 | Device limit exceeded | Remove unused devices |
| E2001 | Server timeout | Switch server |
| E2002 | Protocol blocked | Switch protocol |
Note down the error code before contacting support to save back-and-forth time.
Handling slow speed separately
"Connected but slow" differs from "can't connect". For slow speed, check three things first: whether you're on a free throttled server, whether local downloads are eating bandwidth, and whether WiFi signal is weak.
| Symptom | Likely cause | Fix |
|---|---|---|
| Connected but very slow | Free server throttled | Upgrade plan |
| Slower at peak | Server congested | Switch low-load server |
| Frequent disconnects | Network jitter | Enable auto-reconnect |
One user reported: "Following this flow to step three solved it β turns out I had a download running I forgot to close." Most of the time the issue is simpler than expected.
Summary: don't panic; follow the order "network β server β client β protocol β version β support" and it solves over 90% of cases. If still stuck, Green Tea VPN support is always online. New users should check the FAQ or get the latest from the download center.