Automation not responding to comments

I have an automation set up so that when someone comments with a keyword, a link is sent to them, and there should also be a reply to the comment. The links are being sent, but there are no longer replies to the comments. I that been working properly un until now.

Edited to add that there is only one post this is not working on. The others are functioning properly, and it initially started out working just fine on this post.