My Samsung smart tv gave me the same problem, I couldn't get it to work on the smart iptv app running directly from the tv so I got a firestick and the smart iptv app works perfectly on the firestick and I even find that the live channels dont freeze or buffer as much when playing from the firetick and vod is perfect, if you are going to use a firestick just email siptv and tell them your tv is faulty and you want to transfer the siptv app to another tv and then give them the mac address of the firestick, I did that and they transferred it no problem, saved me a fiver.