Hi! I see you're having trouble with the Zangi app server not allowing messages to be registered. To help you better, could you please clarify a few things?

- Are you trying to register your phone number or device with the Zangi server for the first time, or is this an issue occurring when sending/receiving messages after registration?
- Are you seeing any specific error messages or codes?
- Have you checked your internet connectivity? Sometimes unstable connection can cause registration or messaging failures.

Once I have a bit more info, I can guide you through some steps. Meanwhile, here’s a general approach to troubleshoot registration and messaging issues in Zangi:

1. Check your Internet connection: Make sure you have a strong and stable Wi-Fi or mobile data connection. Try switching networks to see if that helps.

2. Restart the app: Close Zangi completely and then open it again.

3. Clear app cache: If you're on Windows with WebKit, clearing the browser cache or app cache might help reset the connection with the server.

4. Update the app: Make sure you are using the latest version of Zangi, as outdated versions might run into server registration issues.

5. Check for limits: Sometimes the server restricts repeated registrations from the same phone number or device within a short period. If that happens, you might see a “limit for registration” message.

6. Reinstall the app: If the problem persists, uninstall and reinstall Zangi to ensure a fresh start.

Please let me know which steps you’ve tried or if you get any specific notifications, so I can assist you further or suggest some advanced troubleshooting!

Are you satisfied with this starting point?