Hi Hannah,
thank you for your replay.
I’ve found the problem, I had to set the embedded code instead of the link code.
so I set the code:
<iframe width=”832″ height=”468″ src=”https://www.youtube.com/embed/l7ubPBEA_hE” frameborder=”0″ allow=”accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture” allowfullscreen></iframe>
instead of:
https://www.youtube.com/watch?v=l7ubPBEA_hE&feature=youtu.be
and now is all ok.
Grazie! Paolo