I couldn’t find the answer on another post on your site, so I will ask the question here. Can you write a post or share a link to your code that you used to make the Add a Comment button?
Also, a suggestion on your post. Since you are showing “to: author name” visually, you need to remove the ARIA label from the link or else screen reader users will here it twice.
“Reply to Raam to Raam Dev”
When it should really be.
“Reply to Raam”