What do you mean with outdated?
I think it's a problem with the server itself, because I tryied to change the version, I tryied to reinstall the game, I tryied to play the world in single player (downloading it) and the world works, but the server still doesn't.
Only 50% of the Ram is occupied, if that matters.
I have no idea what happened, it just won't let me in anymore.
Now without the "Timed Out" screen, it just stays in the "Connecting to the server..." for eternity, if I try to go back it crashes, showing me exit code 143.