I have set the completion criteria for my lessons to be "student must view" and "spend at least x minutes" on the lesson. Each lesson consists of a short video. When tested on the web, the completion criteria works successfully - the user is given a green check if the proper time is spent. When tested on the iPad and phone (using both browser and moodle app) the user is not given a green check even if she spends the required time.
Any help with resolving this would be much appreciated.