after quite a struggle to get trough facebooks screening and making sure i had everything configured correctly i finally got IG posts to be shown on the discourse again!
Edit: Some clariications.
This works for all new posts. For existing posts you have to do the following:
- Edit the post with the embedded link
- Change something in the post (like adding a word or something) to trigger the update in discourse
- save the edit.
- Optionally undo the change you did to trigger the update.