Why can't I embed an item of media?
Make sure you are trying to embed from our supported services. Make sure you are using the raw URL (a page link to the media, without any code) and try again, waiting for the preview to display before clicking the Publish button. If embedding from Twitter, check if the account is listed as private. If Twitter is not embedding, the connection you are using may have reached it's API limits (350 calls per hour, when authorised), which can be a problem in news organisation buildings. Wait for a while, and you should be able to embed tweets again soon. For more on Twitter's limits, click here.