smart iptv check playlist url

So me and my dad bought this he has a seller and it worked fine for the first 7 days. So we bought the smart iptv one off payment. And the guy re did the playlist.

My dads is working fine but mine says check playlist URL buffers then connect fails my dad talks to seller as I can't and he said the problem was at my end but I have done nothing on my end ? Its only after it needed re activated its been doing this. Any help what it could be on my end says something about my ip but I can't think what I have done wrong and I done know if I can change the mace address from the app to a new one