If you could tone the caps down a bit that would be greatly appreciated ^ -^
After you install the base game, once you download the new .exe, you cannot try to open it/run as it is not a downloader. It is simply an application that opens the game itself. So, what you are going to need to do is move it into your main FeralHeart folder, most likely located in your C: drive, or wherever you downloaded it to, and replace the old FeralHeart.exe that's already in there. I would recommend deleting the old one already in the FeralHeart folder first before moving the new one over.
Glad you got it all sorted! Thank you everyone for your help. I'll be locking this since the issue has been resolved~