Client/Hamachi Error(?)

I recently fixed my fabiano source to where my friends are able to connect and play, but the problem is.

Only myself and One friend can load the server to play, on my other source all 4 of us can play, but on this one we can;t? I don't know why and i've exhausted all options to fix it, like i've changed max peers allowed, made a new hamachi server, and nothing has let the other two connect.

I don't know what to do as a solution.

did you change all the ips?

It's the same client for all of us, would it matter?