I had one of these. My account ended up eventually being reinstated. No reason was given for the initial account freeze or reinstating.

One thing I did - in response to them saying I could no longer do business, I told them that they also could no longer do business with me, requested a copy of all of the user data they had on me under CCPA, and told them to then delete all of my personal information. They did not actually comply and I didn't pursue. I probably should, though.