Interactive Video

I have a problem: I started a new interactive video reusing another piece of content containing 3 bookmarks.

Former video was longer, so now I find myself with 3 bookmarks, only 1 of them referring to a point actually present in the shorter new video interaction. The other 2 bookmarks are OUT of the timeline and they aren't visible nor removable, but they still show in the list above the Bookmarks button.

How can I manage this?

Thanks

Rosy

I am starting an online course site on which I'm using H5P's interactive video and interactive book content types in a course I'm selling. I want to respect the rights of the creators, so is there a recommended way to attribute these content types beyond showing the H5P toolbar with the link to the H5P site? Or is the idea that I can use these freely?

I'v no problem on my own local server with H5P on Drupal 8, it works perfectly. But with the same installation on the shared Hosting (Hostinger) I work with, I can use all H5P Content except Branching Scenario, Column, Course Presentation, Image Pairing, Interactive Book. I have changed any PHP parameters I can change (because of the limitation of Sharing Hosting) :