It is annoying when you have to restart the app repeatedly to watch the ads which could double the time watching it, for ads, this happened to me before and I waited two or three days and it was ok, also for those high quality ads, it could take an eternity to due to the amount of data, but also the Phone may not have the capacity to load the ad successfully which could cause the “forever loading effect” which is what I like to call it.
Sent from my iPhone using by pressing the Reply button.