This happens EXTREMELY rarely, and typically happens after changing your videos settings multiple times. Such as turning Facebook/Linkedin Connectivity on and off.
Here's how to troubleshoot:
Stage 1: Clear your cache (as it's probably just happening on your computer)
To clear your cookies just simply follow the guide relevant to your browser:
That should do the trick... but if you're still facing issues, follow step 2.
Stage 2: Remix Your Video
To remix your video follow these steps:
Hover over the video you are working on
Select the "Remix" button
4. Save Your Video
5. Watch the video and it should definitely work now
You should be 100% by trying both of those setting. If you've done both of those and still struggling, feel free to shoot us a message, and we'll look into your account for you.