When you get "There was a problem streaming this channel," You simply have to leave that show or movie alone for some time. It could be 15 minutes, an hour, or a day. Eventually the problem will go away. There is no point deleting your playlist, or deleting your app, and starting fresh. Keep in mind that your playlists took a long time to develop. Deleting them will not fix the problem. Then you have all the other problems, for example, a movie will play 3 seconds, freeze. You have to wait 10 seconds, it plays 3 seconds and freezes, and so on and so forth. You can try to reboot your router and apple tv, and occasionally that works. Most of the time it does not. Again, wait, and get back to that movie in a few hours. I have about 10 movies and shows that I started watching and have not finished because of technical problems.
Then there's the huge problem of not being able to fast forward or rewind. If you watch a show, make sure to see the whole episode, because if you stop half way through and leave it, the next day the progress will not be saved, and you have to start that episode from the start. This IPTVX is a nightmare. I have a strong fiber connection 940mbps, so there is a ton of bandwidth. Another point: When all these problems occur, try using data and turn off wifi on your phone. Try the same movies using data only. You will see the same problems occur. So you know it's not your internet connection. Next go a friends house that uses a different provider (Xfinity for example). Connect to his internet. You will see the same problems persist. It's not you, it's the people streaming this damn IPTVX that are buggy. Yesterday I was trying to watch episode 7 of a show called monsters. The show would freeze after a few seconds. Granted that yesterday was Sunday and a lot of people were watching American football. Just avoid this IPTVX on weekends and busy times, it will not work.