Brandon "Is there any way that I can not allow users re-take of the lesson after they have reached 80% so they can't re-issue their certificate?"
No.
Lesson
Prevent re-take of passed lesson
اس بحث کو بند کر دیا گیا ہے لہذا آپ اس کا مزید جواب نہیں دے سکتے۔