Zombies4EvaDude no one was being rude to you at any point. I simply said, after multiple attempts, that you don't understand the topic and that even if you don't want to understand it:
UPnP and port forward is not the same at all Local and online connections don't work the same at all I can't help with people using multiple routers and computers in the same home since this provides issues especially if you don't know the topic pretty well so I'm not gonna bother with something so complex with someone who doesn't understand the basics.The only thing you need to know is that if you port forward the correct port properly on your router it will work. There's nothing more to it