Screenshots of H5P

Dear H5P Developers,

I searched the forum and the www for the following question and wasn´t lucky (or smart) enough to find an answer:

"When using screenshots of H5P in free tutorials (for teachers and students), what kind of license should I use?" -- there is content (images/texts) in it I created under CC0 , but should I ask joubel, or the respective author of the H5P-type for the screenshots of the authoring tool in moodle itself?

Hopefully someone can help me.

Thanks a lot

Andi

e.g. the toolbar of Drag´n´Drop