Video in Storyline 360 not starting automatically

In the past day, I have encountered an issue with videos withing Storyline 360 slides not playing automatically. I am using the same Storyline file (as a kind of template and three days ago, when I would place a video in the slide and publish it as HTML5 (SCORM file), the video would play when the course opened. Now when I place the same video in the same slide, and publish the course, the user sees a play Arrow symbol in the center of the screen and must click on the screen to start the video. It plays normally after that. The video plays automatically in Preview, but when published goes to the click-to-play mode. As I mentioned, this just happened in the last two days, but if I republish a file now, I get the click-to-play issue. 

Any help on this would be appreciated. 

Thanks,

Walton Stanley