When I click the VOD, a message 'No video exists.' appears and it is unable to watch the VOD.

This message appears when the video does not exist,

because you have deleted it by clicking [Select VOD] button and then clicking [Delete] button in the lower left corner.

(Caution)

• You have to upload a new VOD file since the deleted VODs cannot be recovered.
• If you replace it with another VOD in the 'Select VOD' of the existing video module, the students' learning records will be deleted.