I can't go onto a server

When i try to go this server i click on it and then it says it is out of date even thought it is supposed to be up to date .This has been happening for 3 days already and i cannot log into that server , i see that other people have been online but for some reason i cannot connect. It says it is 1.3 version. I have tried updating it, troubleshooting it , and re downloading the game.