OK, so I’ll close this issue now as it works for you.
Unable to use Google CalDAV
I get “No CalDAV/CardDAV service found” when I try to add an account.
Here are the steps I followed then come my debug file.
I know a little bit about using adb commands
Does https://forums.bitfire.at/post/11388 help?
Thanks @rfc2822, it helps a lot
I managed to sign in with DAVx⁵ using the app password.
Contacts synchronize correctly but aCalendar only wants to sync my main gmail account.
My wife’s gmail account is “forgotten”: it is not in acalendar’s list of calendars, yet it is duly added and associated with my main account
Why such a restriction? Is the only solution to sign in with DAVx⁵ to my wife’s gmail account?
This solution is not very privacy friendly, it seems to me.