VerificationLimitExceeded error

I recently switched to AT&T mainly for the teacher discount. The first bill showed the discount just fine, but then I got an email saying it was being removed because of a “VerificationLimitExceeded” error.

I’ve tried getting help through X, the 800 number, and chat — nobody seems to know what to do. I even went to a local store, and the manager emailed the verification company on my behalf. They (SheerID) replied saying their system only allows four verifications within 365 days, and apparently my email was verified four times on the day we switched.

Has anyone run into this before or have any ideas on how to get it fixed