Facebook stopped fetching page preview

Facebook no longer shows my website preview when I share the link to the home page, it seems to work fine with individual posts and categories.

I’m getting this error in the FB sharing debugger tool:

“caution-solidWarnings That Should Be Fixed Inferred Property
The ‘og:image’ property should be explicitly provided, even if a value can be inferred from other tags.”

I tried with https:// and https:// and even just www. (I have all redirecting to https://www with no luck.

It worked for years and I don’t remember changing anything recently, could someone please tell me what am I missing?

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