We play an RLcraft server, and today when we tried to play it and i turned on the server, i were able to connect successfully with a minor lag(always happens but it's ok) but my friend, couldn't connect for over a minute or so. He got this 'Internal Exception: java.io.IOException: An existing connection was forcibly closed by the remote host' and i don't know what to do. He reinstalled the mod and forge app, he checked his privacy setting in xbox, he tried changing the ip address( the third one below the port number when you click connect button after turning on the server) but didn't work.
Looking at similar situations on this forum, and going into the site
You only need to follow the instructions of this article if the Aternos support advises you to do so.
so i'm just asking the helpers if i should follow these instructions, or more likely, my friends should do these steps.