Sorry to hear! Game should save automatically. Most likely your old save is safe but in another folder. Save structure was changed at one point and all saves were converted but somehow your save did not get the convention. I can try to help you out if you come to discord. Much easier to go thing through there. And again so sorry to hear this
Hello and thank you for taking the time to read my message. I was so eager to get back to playing that I switched to the Steam version and I'm no longer experiencing the problem at all. I'll start my work from the beginning, but thank you for offering your help. Save your time to develop new features; once again, this game is fantastic!