Switch to Linux. In fact, I already switched when Windows 10 came around. I don't miss Windows to be honest. The only time I use Windows is to play games that arent compatible with Linux or if I need to use an app that is only available for Windows.

I tried this but it sadly didn't work. I downloaded another version of the game from ElAmigos and that one worked perfectly.

That is what I assumed as well. Unfortuntely I have no other way of saving the game unless I sign into the Social Club. No idea what to do from here on.