Pingbacks stopped working

Hi,

For whatever reason, all of a sudden pingbacks are not working on my site. I know other sites have linked to some of my stories but their links are no longer showing up on my site.

I’m using akisimet to block spam and nothing else, and I can’t pinpoint any other plugin I have activated that might stop it from working.

I want to encourage people to link to my site and without pingbacks they aren’t getting any traffic back.

The site is https://www.livingwithballs.com. Is there anyone that could pinpoint why this is happening?

Thanks!