Crushing when start a game

Problem with PUP season 3 server

Hi, i play with my friend 100% of the time. we download the beta server. we played fine for like 2-3 days. then yesterday, when we started a game. he got istant disconnected at the start of the game. every game we tried. he download the *normal* server. with no problem, we can play there fine. he tried again the beta and still crushing at the start of a game, even vs PC 1vs1 o 1vs0. he checked everyting even deleted the game and re downloaded again. someone have the same issue? thx and sorry for my bad english.