Great app, one problem
Response from developer
Hello, certain channels go up and down because they are provided by volunteers. Sometimes a channel in an area goes down and another one goes up in its place. When this happens the older saved channel doesn't work anymore. When this happens, you do not need to delete the entire app, just delete the favorite by swiping left on the favorite and tapping delete. Once this is done, you can add the new channel with the same name / area to the favorites again. Hope this helps, and sorry for the inconvenience.