Cant log in to any servers?

I'm getting pissed. So first it started with a ban, (not the problem) just one server was banning me, but then when the update came and I corrected the ip, even after my ban should've ended, i could not connect. soon, all of the servers i had were screwed up. Now, every one of them says "Cant reach server", even the new ones I download. Was it the update? But that couldnt be it because I added new servers with updated IPs and they cant connect. So, whats wrong and how can I fix this? I want to play multiplayer again