Authors and Date Published not found by Pinterest

Hi, I want to validate our website with Pinterest, but I can’t complete it, because Date Published and Authors are missing.

I have followed the steps in https://yoast.com/social-media-optimization-with-yoast-seo/ under “So what you need to do”, but the facebook debugger is only showing a value for article: author (https://prnt.sc/1jx2n4d), which is not used by Pinterest and nothing at all for date published. Do you have an idea how to solve this problem?

The page I need help with: [log in to see the link]