We've been made aware in recent days that Facebook has changed some of its policies towards sharing posts.
We are in the process of receiving approvals from Facebook to turn our sharing functions back on, but in the meantime, you may find the following work around easier.
In the sharing options, select Download bundle.
2. Download the file onto your computer.
It will deliver a zip file which includes the MP4 (video) file, a Gif file and a selection of scenes that are jpegs. Uncompress the zip file to access this content.
3. Go into your Facebook page, and upload the MP4 file as a video.
The benefit to doing it this way is that Facebook will view it as a native video (rather than a shared video) and you should receive more organic traffic.
We will let you know as soon as the sharing button is working again.