When you integrate H5P activity to Moodle please also add "require passing grade" option to its completion progress. At the moment you can only use two options:
- Student must view this activity to complete it
- Student must receive a grade to complete this activity
This mean if you use "Student must receive a grade to complete this activity " students can get completion mark from H5P-activity for getting 0 point (from answering the first question wrong) because there is no "require passing grade" option that you can use.
H5P has "grade to pass" but it doesn't affect completion mark.