Storyline Interactions in Rise having black mobile player

Nice. Thanks a lot Alyssa. It seems to be a tablet problem - I get the same screen with your course. Screenshot is in the attachment. So looks like the developer team needs to think of a smarter solution? 

Also, every embed Storyline file needs to be started manually. When open the course there is just a black screen with a start symbol - both on smartphone and on tablet. On the smartphone it then opens the element like it would with a video - black backround and focus on the interaction. On tablet it will show this uncomfortable black frame. 

This was just to describe the situation. If you know about any solution or smarter way to resolve this, please let me know.