Black borders in fullscreen

Hey guys today i decided to comeback to this server.
So i downloaded Woltk with new model from the site and then launching it.
But it seems that i have a problem with the fullscreen mod because it's the same for 800x800 and 1366x768(the resolution of my laptop) , i still have black borders.Do you have any idea to solve this problem because eh i can't play with this.

EDIT: Okay i feel ***** but my game folders was still in the Download folder and when i moved it to my program files it just worked perfectly , so i still post this cause i haven't seen any other topic who talk about that so if someone have the same problem here is the answer

Also i am really sorry for my english and the fault !