By using Vimeo restricted videos in H5P interactive activities, those videos were not playing in the mobile app.

Note: The same issue exists in safari browser

Steps:

Login as Teacher

Go to any course

Click on add activity and H5P

Click on Content bank link

Click o Add and select interactive video

Upload video from vimeo(Make sure add restricted video with domain permissions)

complete the creation

Enrol users to course

Login as Student from ios mobile app

Try to access above video