Xbox One Terraria Join Errors (Biggest problem)

[EN7420CE]

Like every else, we can't join friends or others that we know, but I have tried so hard to fix everything and it was not easy as I expected, I'm kinda sick of the nat type thing, cuz it doesn't work still, even the upnp, so like many other games like halo, cod, Minecraft, far cry and all sorts, I am able to join my friend but terraria is the only game that me and my friend can't play together, we investigated further as we can and I also seek so much assistance but still won't work, I don't know if theres a firewall on xbox, some people are claiming that theres a firewall but that sounds like pc problems or i dont know, its like im in a meltdown chaos here, its like things are almost entirely wiped out, please help