I was trying to help you, but the last post sounded like you thought I worked for Tumult.
I have made no suggestions !, just observations.
The first is to point to the scene buttons so others can spot them and help you rather than just going to the first scene and have to figure out how to get to the second slider ( scene). It may be obvious to some but not all.
I also have pointed out that the iframe DOES Load and can be played but does not display. If you think that it is pointless to mention that then good luck to you.
Lastly, if you only wanted Danial to respond then you should PM him and not but your question on the Forum where you clealy do not know how to behave.