The embedded link does not display

Hi Team,

thanks for the excellent plugin. I have an urgent issue right now.
I had made an events feature on my website by collating and manually entering them into the events manager.
The links to the event websites were embedded within my individual event page. They displayed really nicely until today I noticed that they are all broken. The embeds show up fine on the backend – in the post editor area. But on the front-end on the website – all i see is the URL. Why is this happening? Please help?

There have been recent changes on the website – for one, I migrated the entire website to my new domain. I also deactivated and reactivated the embedly plugin. In the past, these havent affected my events so I dont see how they could be the problem – but I’m mentioning in case its relevant.

thanks