Disconnected From Server For A While!!!!!!!!!

Hello,
I join in game the last week and appears the box with text: "Disconnected From Server For A While" reenter in crossfire and i was blocked for 3 day.
Today i enter in crossifre and appears the write: "Disconnected From Server For A While" and i m banned for 7 days.
I don't understand why? After the first block i wait the unblock and while i delete all on my computer because i was think i have any program goes in conflict with crossfire but now has happened again.
I can try to unistall and reinstall crossfire!
I want unblock my account because i have a match on esl in this day and i can't partecipate!