I bought this game where is my premium version?
Same question, ever since I last used Itchio, I've noticed that all the NSFW games I bought are now demo versions instead of the full versions. This game is just one of many that have reverted to demo versions.
Have you tried "my library" from the drop down on the top right? Mine are still there like the games I bought
If it's still demo's then you might want to ask tech support, if this website even has that
