When I try and join my friends smp I cant but they can

When I try and join my friends server it appears offline even when it's not when I try to join it I get the error failed to connect to server connection timed out: no further information. Just today I was on the server fine but now I can't join the server is not white list and has only been up for like 2 days we restart frequently and I'm the only one that can't join and have the mods that everyone else does

Anything will help the server is origins btw