Are some banks unwilling to do 2FA to de-googled phones?

I set up the CalyxOS running phone in my Wells Fargo acct to call the phone. The bank people say for some reason it is not being accepted as something the bank will message. So when I login online the 2FA instead tries to do a push notification presumably to that same phone. That never arrives. So a couple of questions:

1. are banks known to be finicky using phones that have been rooted and have alternate OS on them? …

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