Sorry to hear you are having issues. I believe there were reports from users with the same issue as yours. And, we found out that the culprit of the issue are 3rd party system cleaner or something similar, which keep deleting "license.sig" in the "C:\ProgramData\Stardock\Start10" folder. Once that file deleted, Start10 will think that the software is not activated and will ask for activation. This will happen again and again every time that activation file been deleted. What you should do is to whitelist/ignore that folder from that 3rd party software scanner.
As mentioned on that link you stated above.
It has also been reported that some “system cleaner” type software will remove these needed files, if this happens, adjust your program to not scan these folders
Stardock Community Assistant.