Set a fresh password
Enter the email you sign in with, your current password, and a fresh password. The moment the fresh password is set it becomes your Hub password on every Hub address, and the old password stops working. You will be signed out everywhere and sign in again with the fresh password.
After you sign in with the fresh password, register a passkey for this device from your Hub profile. Passkeys are bound to the address they are created on, so a passkey made here works here.