Upon further review it appears I may not have any call blocking app. I thought Mr. Number was active, but it’s not.
On the calls that go through, his caller ID displays and he would have no reason to block any calls to me.
I’ve not tried anything other than restarting the phone. I can try toggling airplane mode if you think that might help.
This happens on WiFi because I am either at my desk or just outside the building. The WiFi signal is strong and I’ve not had a problem with cell coverage locally at all.