2FA Questions

For those of you who think you understand Ring’s 2FA implementation:

Overall:
● Is it possible to choose the method of your choice (among registered methods) each time you log in?

Authenticator Apps:
● Is it possible to register more than one authenticator app?
● Is it possible to modify the (adjustable) parameters of a registered authenticator app?
● Is it possible to delete a registered authenticator app?
● Is it possible to register multiple authenticator apps? If so, how many?

Cellphone Method:
● (Note: I would NOT recommend this method. Ever user is obviously free to make their own choice, however, based on their individual circumstances.)
● Can you add a cellphone number?
● Can you delete a cellphone number?
● Is it possible to register more than one cellphone? If so, how many?
● Has Ring (officially) promised that cellphone numbers used for 2FA purposes will remain encrypted and will not be used for any purpose whatsoever other than for 2FA?

Don’t have answers to your questions, but what I use is a web based (they have phone apps too) password manager that support TOTP. This works well for me as I was already using the password manager before I signed up for Ring.
The Password manager is supported across phone types and browsers so I can use it on my various equipment without issue.
As for phone number, Ring already has that as I’ve signed up for their monitored service and they would need to call me if the alarm was triggered.