Game will not open

When I try to launch the game through steam the game says “running” then “sincying” then nothing, it does not open. This only started yesterday after I downloaded a mod. Since removing that mod and all others off of steam and in the production line folder it still does the same.

Not sure if the two are connected but cant open the game at all even after uninstalling and reinstalling plus cant find any way to contact support on this site :confused: