Help!! Game Error

I am hoping someone on here can help me out, I am currently in Year 2020 and need to pick my European squad, however when i try to select a player, I get the image below where it won't let me select them in/out:

When I try the "Auto Select" option, it picks 25 players, but not 25 that conform with the rules of the competition..

Has anyone else had this problem, how do I solve it???
I have tried revalidating the program files in Steam, but not sure what to try next.

HELP!!!