Private Dedicated Server Issue

So i’ve gone and performed all the steps needed to set up a private dedicated server and I can join, play and do things as normal. However when my friend tries to join he’s met with a ‘Connection Timed Out, Could Not Find Server’ error.

I’ve made sure all of my ports are open as required and would assume since I can join the server it’s working correctly I’m now wondering if it’s an issue on his end or my end. I feel like im really close to getting this working i’m just missing one little thing. Any help would be massively appreciated.

i am also having this issue, all my friends can join but not me. i havent found any fixes and ive done everything i can think of. its absolutely frustrating