Can't connect to server

[k8katt]

Hi! My friend created a server for the two of us to play on, and we tried it out today! It worked just fine the first time, and we were able to play no problem. However, we both had to leave and attend to other things for a little bit so we closed the server while we were gone. When we tried to log back on around 45 minutes later, my friend couldn't access the server even though they created it. Every time they attempted to join it just sent them to a big lobby with a bunch of other people, and trying /join and other codes just sent them to other lobbies. I could still get into our server no problem, but my friend still can't get in. They tried restarting minecraft and the server and nothing has worked. What should we do to fix this? 

[notminehut]

Is there an error message when they attempt to join the server?

[k8katt]

4 minutes ago, Minehut said:

Is there an error message when they attempt to join the server?

No, it just doesn't allow them into our server at all and takes them straight to a different one.

[AgentGamerPro]

1 hour ago, k8katt said:

Hi! My friend created a server for the two of us to play on, and we tried it out today! It worked just fine the first time, and we were able to play no problem. However, we both had to leave and attend to other things for a little bit so we closed the server while we were gone. When we tried to log back on around 45 minutes later, my friend couldn't access the server even though they created it. Every time they attempted to join it just sent them to a big lobby with a bunch of other people, and trying /join and other codes just sent them to other lobbies. I could still get into our server no problem, but my friend still can't get in. They tried restarting minecraft and the server and nothing has worked. What should we do to fix this? 

Is the server whitelisted?