In current version of Styly, YouTube videos should play back in an automatic loop. However, if the video does not play, the following two issues are possible:
⑴ It took too long to load (perhaps due to a slow internet speed)
⑵ The owner of the YouTube video does not allow re-posting of this video
Therefore, if you wait for a while or attempt to add a movie again and it still does not work, it is possible that there is an issue with the license rights.