Promocode not valid !
Promocode expired ! (24 Hours validity)
Promocode may be in use by other users! should that be "Your promo code can only be use by one user?"
In case promocode is valid and unable to view the video then wait for 1 minute and try again.
Your browser may be old. KIndly update the browser to the latest version.
Your internet bandwidth may cause the video to stick in the middle of the play.
In case of mobile try to get a good bandwidth for viewing high quality video.
In case of disconnection error by player try refreshing using the refresh button located just above the player.