Hey i appear to be having the same problem, I've put up the claim token onto the MoTD and nothings happened.
Curse username: Ban_Manley
Server IP address: 126.96.36.199
The same issue here. The server is located here: http://servers.minecraftforum.net/servers/2577647. My user name is SBPrime. I think thers another issue coz the server has no stats showing. It only has "processing" thats all. It displayed players and stuff at the begining.