Posting this in case it's already been solved before. Windows 10 x64. Pretty skilled on computers and I usually figure this out myself. The demo for Mannequin months ago worked just fine. So I purchased. Now, when I opened the .exe Windows popped up alerting me on the file, like it does for freshly built programs, I clicked Run Anyway. Then antivirus pops up with its usual fresh software scan. Afterwards, I can see the program "nwjs" running but it doesn't show up. Restarted, disabled antivirus, all that. No luck.
EDIT: Tried installing through the itch app and still nothing.