Different descriptions on Pin Options

Just downloaded this plugin to test it out. I love the option where people can choose what image to pin. But I’m noticing there seems to be different pin descriptions pulling in.

Some pin descriptions populate with the meta description, some with post title, and some with the alt text or image title. And if I don’t have a featured image selected, the description fills with the post content.

Here are the posts that I’ve been trying to make the descriptions uniform:
https://www.appleseedcuisine.com/sweet-corn-on-the-grill/
https://www.appleseedcuisine.com/sweet-potato-lentil-stew/

I’d like to keep all the descriptions across the post images the same and wondering how I can achieve this.

Thanks so much for your help.

https://www.ads-software.com/plugins/pinterest-pin-it-button/