Bad News

I dont think i am using steam. I just bought the digital version from gamestop.com and downloaded it and this is the version i am at.

I recently just updated to v1.59 and i want to play coop multiplayer. i click on a server and it says bad version, connection denied. What does this mean and how to i fix it? all of the server have red x's right next to them. I dont think i have any mods that would deny me access. Any suggestions would be great.

Actually nvm im not at 1.59... im not sure how to update. I downloaded the update and ran it and it said it was updating but it didnt

Sorry i am new and i just downloaded the game, im not sure how to update to the newest patch. I downloaded the 1.59 but i am not sure what to do after that. If you could give me some information that would be greatly appreciated