Today i decided to play again, i followed all steps, got the newest .dll but happensa this:

But WAIT, DONT CLOSE THIS THREAD YET, I dont think it's because server, server of course is online, and i checked it lots of times during all the day and the number of player changes, looks all OK. But how u can see in the picture I noticed that I have the build 313, not 914, but i downloaded and replaced the old .dll for the new one, i cant understand.
Hope you guys know what to do.