Unplug ur pc and throw it out the window then bring it back in and put it in the bath and give it a wash .. Jkjk
This happened to me before where I couldn't go on server two it would just say warning like disconnecting in the tip right I tried it a couple of times and then it finally put me in. Try to join server one for example and if it doesn't work restart the game and retry it over and over that might work.