There are issues with the servers in FIFA 17 today, December 2nd. Login is possible, but the player search fails.
Currently, it is not possible to play online against other players in FUT 17 on PS4, Xbox One, and PC. Numerous users have reported this on reddit. We have just checked, and yes, the player search is not starting for us either.
There is a message saying that joining a match is temporarily disabled. EA Sports apologizes for this and promises that it will be possible again soon. You should try again later.
When “soon” will be is not yet known. Until then, you can only play the offline modes.
Update: It seems to be working again.
The nominees for the TOTY in FUT 17 are already known. 9 players from FC Bayern Munich are included!