Same inssue, Win 10 Pro, latest windowblinds release I downloaded today. Immediately after running it fors 1st time post install I get a black screen. Nothing could be done.
So, hard reset: login screen appears normal, but immed. after login in, the same black window, but this time Win returns to the login screen, tried this 3 times.
Finally had to find out how to boot in safe mode, succeeded, and succeeded to de-install.
Fatal practice on Stardock's side if yo ask me!