Friends, instant articles are working today. For my part, I did not change anything. I think these were Facebook’s problems.
Described this problem and sent a report to Facebook support. Gave a link to our discussion. You may also need to write in support of Facebook.
I suspect that the problem is in Facebook. I have 2 sites, one is fine. But it uses the Jetpack plugin. In the plugin settings I use CDN Jetpack for pictures.
Also tried to check through https://developers.facebook.com/tools/debug/
Check the processing of the url is the picture and Facebook pulls up the picture.
Sorry for my English (translator).