Feral Heart

I'm just curious, but what exactly is the difference between Feral Heart and Feral heart Unleashed? They look almost identical to me. Will there be new functions in FHU? Like NPC's or objects you can interact with? Or will it just have updated graphics and a few new features?

Installation of the game was fine, and it worked when I first opened it. but after three cannot connect to server errors, I finally managed to login, and was met with a black backdrop. the game functions and I can even enter a server and move around, but all I see is my character running in a black abyss. I tried changing the display settings and all that, but when I open the game after closing it, it doesn't save any of my changes. My computer is less than a year old and is completely up to date, but unfortunately I'm computer illiterate and have no idea how to fix these issues. I'm hoping to maybe find someone that can help walk me through what I'm supposed to do.

I have a question and maybe it has something to do with this but it might be my computer I really don't know, I still have to server problem and the game wont let me login, do I maybe need to uninstall the game? or is it just my computer?