I recently came across this issue, and tried to report it. Then it seemed to resolve itself, but not it is back, again.
I am referring here to the mystic vision. You can let the video play, but you do not get the reward. Worse, this can be confirmed when you notice the video does not start.
I do not mean to be a pain, but this is starting to bother me a lot. I am not a rich person who does not need every bit of help that is available, but when something like this happens, it becomes an irritating waste.
I have version 38 on my device, and I am on Wi-Fi. The problem is that even if I do try on mobile the problem remains.