After upgrade videos stopped displaying but sound still plays – Secret Video Vault-Fast Player Review

Up until the last upgrade, this app was perfect for what I wanted. Then the player stopped showing the video (mp4), however, the sound continued to play. I don’t know how to correct this—or if the programming changed that caused this. When I’ve clicked on the support link the page timed out because it wouldn’t load. So, I came here. This app would have garnered 5 stars had this not happened. Help please.
Review by DisplacedPixels on Secret Video Vault-Fast Player.