What finally worked for me was deleting the 1099-INT, logging out, clearing all my browser data, restarting my computer, and signing back in to enter the form manually. It still does NOT have a place for typing in the address or anything else manually, but at least it didn't trigger and error this time when I went to file my taxes, so I have to assume the address issue was fixed.
It's weird because you type in the name of the institution and it never asks you confirm the address or identification of the institution in any way, just sweeps you along to the next window.
