On occasion, when selecting "Existing page post" and selecting a Facebook page post to use with your Properti campaign, Facebook will reject these at random, causing the campaign to error.
We recommend uploading the creative (whether still image, or video) to Properti and using that as the creative for the campaign.
The likelihood of this campaign erroring if using a video uploaded to Properti is unlikely.
Steps:
Clone errored campaign
Upload creative to Properti
Edit cloned campaign
De-select "existing page post" as the campaign creative and replace with "Properti creative".