Sure, that's alarming, but if you set up a passkey on the "wrong" password manager, you've (temporarily) lost your passkey. You should probably be kinda alarmed about that.
You can click "try another way" and use your password, and then you'll have access to your bank. But then, you should try to resolve that problem. If you (or a trusted friend/family member) can figure out how to use settings to remove the passkey from your bank's account settings, you can do that, or you can ask a bank teller to help you, instead.
(And, luckily, you won't need a bank teller, because you'll still have access to your account.)
Even my primary Credit Union is limiting teller roles in branches. There are still people to help, but then you have to go in person. My nearest branch is a day trip away but I can do most banking tasks at any partner CU location.
> you can ask a bank teller to help you
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.