Heya @Heracles ! I only see one og property in that page and it seems to have a full URL:
<meta property=og:url content=https://master--youthful-feynman-696c41.netlify.com/>
I don’t see that you even have prerendering enabled, which is the usual “get everything in shape for social sharing” first steps: Netlify App and see also [Support Guide] Understanding and debugging prerendering for more details about that implementation.
Could you let me know a bit more detail about what you’re seeing that isn’t working as expected?