We replaced our main TV with a Samsung smart TV a few years ago and connect to it with a Mifi hotspot while traveling. All of the sudden, on our last few trips, the TV connects to the hotspot but with no internet connection. If I use my cell phone as a hot spot, it connects just fine. I need to use the Mifi for the 100G plan I have. I have tried all of the suggestions on line with no luck. HELP?