u/Gir-pool-Senpai

Alright so me and my friend for some reason can't connect to play hell 4 mod together. We download the same links for the mod and got the game from Gog so all the files are the same. We got radmin vpn and join our own private server. Turned off our fire walls. Made our own characters made sure everything was the same difficulty and game changers. But we can't connect to each other. I start a game and go through TCP/ID but nothing appears for him and we tried the other way as well and nothing appeared to me. Watched a video and we did everything what the video said to do but nothing still appeared for us in multi-player. Are we missing a step? I checked with google gpt. And follow step it suggested as well with making sure radmin VPN took authority made sure ip6 was unchecked as well. Tried ipx wrapper as well. But nothing seems to work.