Im using the current version so is the save but i managed to get further after resetting but got stuck on level 4. Anytime i restart to try again it just gets stuck at the same points.
I might have an idea as to what the problem is, what is your monitor size and what window size do you have the game at?
In the meantime you can go to C:\Users\Your User Name\AppData\LocalLow\Delusria\Salvor DEEP
Then find Playerdata.json and look for "visitedLevels" and type the number after whichever one you've discovered.