What does it mean?
This error can indicate a global user-agent block. In simple terms, the app you are using may not be allowed right now.
What to do
Restart the app first. If that does not help, reinstall it from the Download page. If Error 461 is still there, contact support with your username and the app you are using.
When to contact support
If this continues after restarting or reinstalling the app, contact support.