I have followed the instructions here: https://docs.moodle.org/34/en/Moodle_Mobile_FAQ#My_protected_Vimeo_videos_are_not_playing_in_the_app
Tested here: https://mobileapp.moodledemo.net/ and the videos are working.
allowframembedding is enabled but I went as far as commenting the header out for testing
The error I have in Android is below, iOS just displays a blank screen.
Any tips on what I can do to fix this?