Yeah, i'm not sure about unofficial mods so i can't support you on that. But, they often modify persistent data in your Ren'Py environment. Try these steps:
- Delete the persistent folder again:
C:\Users\YourName\AppData\Roaming\RenPy\FracturedVeil
- Make sure no old version of the game remains anywhere.
- Re-extract v1.7 into a fresh new folder.
- Start a new game (do not load anything made while the unlocker was installed).
The log.txt file will be useless because FV wont log anything related to it. So most likely, it's corrupted and simple false returns to the main menu.
Or.. at least that's my guess, because i haven't encountered issues like these and EA players haven't reported it either.