I'm trying to use firebase with your example. I created a database and tried setting both rules with authentication and without.
I set up anonymous authentication, with Gmail, etc ...
The problem is that whatever iI set I am always asked to log in with my gmail account.
if I try the connection using other accounts then access is denied
In this way, I cannot release the app.
How can I create an app enabling firebase that does not require gmail authentication with my account?