How to remove Duplicate App listings?

I noticed when I checked my Avast firewall this past week, that one of my apps had 41 listings which seems to be excessive. I contacted the company they connect to and the rep said he though that was excessive as well. But I can’t discern them apart. How can you remove duplicates?

I’ve attached a jpg showing what I am talking about. Perhaps someone can help me figure out how to clean this mess up.

https://www.avast.com/faq.php?article=AVKB25

Delete all rules, reboot and create new when firewall ask

Thank you both for this information. I’ll dig through that Avast link and follow up with my outcome.