Guys.
Really weird problem here. When I use WiFi to load the app, every single channels works perfectly fine. However, when I turn off WiFi and get to using data, I have only channels from a certain group, for instance, "Sports" that work/load instantly and, other groups such as "24/7 channels" for instance, do not even load a single channel!! Again, those same channels on WiFi load/work perfectly fine.
It's the oddest thing I've encountered. How can certain channels not work on data but work on WiFi. Absurd!
If you dont have enough speed to load them without using wifi, you will not be able to load them and they will be black. Depending on how a channel is encoded it might require more or less speed to be able to see