I am trying to use the External Media option to put:
1. a YouTube video
2. an mp3 hosted on Amazon S3
into a page on a WordPress site.
However the option does not appear to be available.
I follow the instructions here:
But all I get is a blank page when I click on External Media
I have tried this across various browsers and nothing happens.
There are videos and audios already on the website which used this method (I'm recently hired, someone else did the earlier media)
Am I doing something wrong?