Changed the wifi

I’m new to this whole mineOS stuff, but I installed the server and built a spawn and configured all the mods I had loaded, and when I wanted to port forward it, I found that spectrum does not allow port forwarding so I tried switching to my other internet. After plugging in my ethernet cable to the other internet, I could not connect to the address from putty, winSCP, or the mineOS website. Does any know how to fix this and make it work with the new internet (nighthawk). If I need to reset everything that’s fine with me but I have looked it up and I don’t know how to do this. Let me know if you need any more information, and thank you for your help!