How do I remove iPhone passkey autofill for Amazon accounts on Android devices?

My IPhone is no longer usable. However a passkey autofill still prevents sign in to access my Amazon accounts (both .com & .ca) on other android devices, including new phone. How might I remove the key autofill?

I am not able to do so on either Android tablet or new (not synced to iPhone) Mac computer, even after deactivating "passkey option" on Amazon account. Can still not access sign in on Androids despite changing pw, adding new password to replace it on both devices.

I can sign in in on Mac Safari, but do not travel with it so... need phone/tablet for Kindle books.

Any chance of a fix?

[Re-Titled by Moderator]