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.
Use local files
is there a way to use local files instead of files on some web servers?
Would that be a nice and easy feature?
I don’t understand your request — can you please say it in other words? What files are you talking about?
I want to synchronize the local address book with a changing .vcf file located on the SD. I want that to be done as soon as either the address book or the file changes and it looks like this is the only app that does exactly that. When I set the program up, there is no option for local files, though, only http and https.
I’m sorry, but that’s not possible with CardDAV beause it’s based on WebDAV (which is based on HTTP) and DAVdroid is a CalDAV/CardDAV sync adapter.
Basically, you could adujst the source by creating a new RemoteCollection that serves a local directory - if you’re experienced in programming, it might not be that hard.