Option 1
Go to Global Feed > on Blog page find your article using the search bar > tap your name on article > opens your Timeline > find using the filters (if too many) your article > on the article select the top dropdown menu and select “Disable Comments” or “Enable Comments”. All posts by default allow comment.
Option 2
Go to your Global Profile Timeline > find your article using the filters (if too many) > on the article select the top dropdown menu and select “Disable Comments” or “Enable Comments”. All posts by default allow comment.
Still unsure? Get in touch with resolution centre.