I am getting authentication failed. Had been working fine until a couple of days ago. I haven't changed anything until today. Tried a different url but still getting authentication failed. Can anyone help?

Can someone help me please. For about 3 or 4 weeks now I don't get guide info. Channels all play ok. I'm using the built-in stalker client on Kodi 16.1 and I'm wondering if something has changed. In the past I would have this problem and I would wait awhile or clear data and restart Kodi and...

I've been reading my butt of trying to figure out if nfps is working or not. Last I can understand is that it's working now, but not for me. I've tried everything I read but still getting authentication failed. Stalker Client and Stalker Client NFPS 0.8.4. Reset IPTV, changed MAC addresses...

What mac address would I need to register? The device or the router?