"Cannot connect to dedicated server anymore" error

Thia issue it is old for me,about three weeks ago,all the time.Today,only for this game,I take a new Internet provider for verify this problem.I had extensive discussions on the mail and on the forum(here and here) with Jascha about this problem.It’s strange,because this happen only to some players(included me).I do many professional tests like: UDP packets,MTU,ping,trace route,windows services,and so on,everything, absolutely everything was tested.All was ok.Last chance was to take another Internet provider.I will keep you updated with functioning.But,if with this provider the game will work perfectly,in my opinion can be a firewall which detect DDOS attack and blocked some IP classes for a little time.Another peculiarity is that only on this server have this problem.I played on differed servers,with some location,and all it is good.This message “cannot send to dedicated server anymore” it is new,in last version only EAC kicked me ,but at long time after problem appeared.
Greetings
Liviu Dan