Bugs in content types

Hi, 

I am experiencing an issue with a content I created, "1.2. El destino de tus fondos". From the root html download I have downloaded 10 kmin ago, I reckon the id is: h5pbookid=6807521c39137bd2a1a426ab&chapter=h5p-interactive-book-chapter-26231783-d30b-4aec-aa77-574ead39d956&section=0

It has disappeared from my space and now a content is duplicated. How can I retrieve it?

Thanks in advance

Hi, is there a way to fix my youtube integrated videos from stopping when I scroll and the video screen isn't visible anymore? 

My collaborator can't see the course presentation option tabs (see image attached) on the activity we are working on together. It's puzzling as I see them on my end. What can we do? Without these options, its impossible to edit slides. Many thanks!