Same happened to me. I tried updating email, password and even changed my phone number. I did liveness test during phone number change, but no luck still my KYC in tentative.

Dear Pi users, Someone just post this on X. Did this happen to you, especially if you have already migrated?
This is what he posted:
It's been months since I went to my validator portal to validate people's KYC. I decided to go check now so I can validate a few and I saw this.

#PiCoreTeam is everything ok?

If the above happens to you, check the comments section for solutions.