Others cant join my hamachi server while i can.

[jigsawkiller90]

I have a 3.1.2 hamachi tekkit server and other people cant join. There was a recent incident with hamachi that changed my ip4 adress and now i New the new one. I can join the server by the way and my friends are all at 3.1.2 . Also , when i tell them ot join they say that my server appears on the server list but there are connection problems. I havent done port forwarding on hamachi neither now nor did i do before and others could join.