1. Go to any existing post.
2. Click “Repost” button next to Facebook account.
3. Refresh page.
4. You should see the “Posted on…” link
5. Click it, it will get you to the Facebook post.
All others. Your problems are different, please don’t hijack topics. Either check the answer is in the FAQ – #4.5: https://www.nextscripts.com/support-faq/#q45 or check the Log/History for errors and start your own topics.