Have you tried:
1) Disable the live tv
2) Disable pvr
3) Exit kodi
4) Donation site - IPTV Reset, confirm MAC number 00:1A:78 ....
5) Wait a few minutes
6) Launch kodi
7) Configure prv **checking all setting are correct (same MAC, no typos in url, etc)**
8) Go back into prv to make sure...