Errore in fase di collegamento a firebase

MIT App Inventor Help
1

Hello

When I connect my app to the mobile phone with MITA12 companion, this error appears on the PC screen:
Error from Companion: For a custom firebase host you must first set your authentication server before using authentication features!

How can I solve?

2

Probably an issue with the EU server. Try setting up a new project with the US server instead.

See here for more info