At virtually all banks, the bank tellers cannot help you with login problems. You will have to call the bank's tech support and somehow navigate AI-modulated phone menu hell.
I went to my bank with all my ID and my bank card, talked to the teller and was told to call a support line. One of my parents went through the same thing.
I don't have a citation for you just recent experience, do you have a citation?
My credit union has people who can help with any online banking/website login issues. They aren't tellers, but they are there. You just need to ask to speak to a customer service rep.
Tried this, they weren't even able to verify my ID for KYC reasons. Had to go a second time after they blocked my account with zero warning. I have zero expectation that they will be able to help me with a password reset
I help run a non-profit and the only time I have ever been able to get this kind of service is when I visit a bank that has in-person business services. Tellers do not have any ability to do any of this.