I fixed it
On a hunch, I opened my wifes pb settings to bbid.
I could then log in with her usual pw, which never worked on my pb, even though registered to her.
I then changed her pw to her usual other one.
On my pb I used that new pw and lo..... It worked.
So i then changed the hint to something neither of us would forget, and she would kill me if I forgot.
No more bbid popups.
This could not work unless you had 2 pb's with the same registration.
But it would NOT let me change my pb to my bbid, as my bbid is "already used". That requires a wipe, and it is not gonna happen.