“Instant Articles” box on the post edit screen

Hi,

I am getting this message for 2 of my posts:

Before submitting for review, you’ll need to handle the warnings on these articles by looking at the “Instant Articles” box on the post edit screen:

Yet , when i go to the post edit screen, there is no “Instant Articles” box anywhere on the screen. I even tried checking if it could be added from the “Screen Options” on the post, but it doesnt work

Thanks