servers maintenance?!

its been a few hours now and i cannot connect to any server, getting the failed to connect to instance while on some servers i can connect but get kicked out after 1-2 min ....is there an issue with the servers? ..

if there's any maintenance going on, how much longer will it take in order to play?

the is no maintenance going on, if you suddenly can't connect to the servers then you properly have to look at that localy. Like your PC firewall, DNS server or ISP network.