Mathematica has suddenly begun to ask for the registration key on each restart. I was able to generate a new key already 3 or 4 times, but needed to go through customer service for the latter instances.
The last time it happened, I had completely uninstalled the program, deleting the directories recommended here: https://support.wolfram.com/12473?src=mathematica . After initial startup and entering the reset activation key, the program started. I then closed the program, and was successfully able to restart without being asked for registration again. However, once I rebooted the machine, Mathematic requested the registration key again.
Customer service has made not constructive suggestions how to resolve this. What could be the issue?
System: 2017 MacBook Pro with Intel Core i7 running macOS 12.3.1.