I want to claim my Gameserver (http://www.gametracker.com/server_info/93.114.82.107:25565/) but it says that the Server doesn't return a Server name.

I'm sorry to hear you added it with the wrong query port. Please feel free to reply with what it should be changed to. Please note, if you say 25565 or 25566, I have already checked and those ports are blocked on your end so please be sure to open the appropriate port.