IPTV stopped working on my samsung tizen tv

Hi guys, I have a NU7100 Samsung Smart TV with tizen and was using ssiptv player for the past 2 years but from a sudden it stopped reproducing on my tv, I can normally use my android phone or any order device and it works fine. If I connect my tv to any other network it works fine too, idk how to explain, if I connect my tv to my main network it does not work, but it works fine with any other device connected to the same network… Can someone help please…