Hey Zaldar, sorry for the uber late reply!
I can't figure out the M&M:HK invite system. Half the people are getting in and on my world no problem, while the other half are being told the server's full (it's only half full on my screen) and that they have to move somewhere else. To make it even worse, there doesn't seem to be a way to look at a server list and choose.
I'm on the Dragon Legacy server, with the username Nereus, leading the Coconut Monkey alliance. If you're able to figure out how to select servers, anyone's welcome to join us