Authentication Issues

"Key Not Found" Error:

1. Connect to VPN (ProtonVPN or WARP | free options)

Proton | WARP

1. Download latest version from downloads page

2. Try different network

3. Verify subscription status on the official site

Server Connection Errors:

1. Check for maintenance announcements on ZTH Status page

2. Use VPN connection

3. Update to latest version from official site

4. Wait 15-30 minutes and retry