I have an LG smart tv and the set says it's connected to the internet the modem says it's connected to the internet but the tv refuses to upload or download anything. If I go through a mobile hotspot the tv works fine. Everything else I have connected PC, kodi box (via ethernet) and other devices connected via wifi all work 100%. I have asked my isp if he has any problems and he says not. I use a smartDNS on my router but even without that the tv still does not connect. I am not into all the intricacies of the workings of the router as I basically use it as a tool to connect my system to the world. I have Merlin 385.15 on my router but the previous versions were just the same. Does anyone have any ideas?