Abandoned Cart – Facebook Integration

Dear;
I’m still trying to get Abandoned Cart to work with Facebook messenger, but facebook reviews are not successfull.
I did everything as per instructions and videos. I’m sharing the same below.

To note, as well, that “Send to messenger” checkbox is not showing as well on product pages. Example:
https://kafooexpress.com/shop/accessories/romoss/romoss-sense-xpower-bank-ph30/?swcfpc=1

Appreciate your help wit this issue.
We can do teamviewer or Zoom meeting if you wish.