Tvheadend

I have tried almost everything and I can't get this to work. The basic rundown is this.
I'm trying to get this github repo https://github.com/iptv-org/iptv to work as a IP tv network but when put https://iptv-org.github.io/iptv/index.m3u in the wizard it does not give me anything but the TV antenna works just fine. I have tried so many things that I am not able to list them all but what I will say is it was working before, I just don't know how to get it back to that state. If you have an idea or suggestion please let me know because this is becoming mind boggling. Thank you to everyone who helps.