Troubleshooting
Understand both ends, then connect.
Configuration and limits
Before you start
App not opening: check installation and the system prompt, then retry. A missing response may mean launch was cancelled; it does not prove the app is absent.
Connect
Service unreachable: test the service and listening address on the provider, then check the joining port is free. Verify SSH credentials or the web protocol. Start a new connection after changing settings.
Checks and limits
Device connection failing: check both networks and displayed errors, then use network-path diagnostics. A successful diagnostic does not guarantee this session. Report the feature, systems, failed step and error text; omit invitation secrets, private invitation links and passwords.