I have added "Promo Video" to my app on Google Play. It is placed on youtube, it is between 30s and 2min and it plays correctly on Google Play accessed from Android device. But when I go to app web page on play.google.com (on my laptop, using any browser), I can't see it there. Note that screenshots appears correctly, and video has been added to app over 48h ago.
I have already searched a lot of HELP articles and google and didn't find any similar issue or solution.
I had the same problem. The solution was to use the full YouTube video link as explained here https://support.google.com/googleplay/android-developer/answer/1078870
Use the full YouTube video link instead of a shortened link.