Plutonium

Hi everyone, I have been having this problem for over 2 years straight since Covid started, i have tried everything from hamachi to connecting on the same WIFI as my friend, no matter what I try Upnp just doesn't work, it may be because of port forwarding but my router isn't clear about it and tech support just don't know what it is, most people get the problem fixed by itself mine just stayed stubborn, I am a pretty old member of plutonium and I played before t4 was even a thing, so i hope i can get some help especially if from an admin or a staff member or a high rated staff member because it really is becoming an annoyance because i wont be able to play because of high school and stuff, hope i can get some help and any participation would be appreciated.