I have a good connection to NZBGeek, have entered the API info, tested the connection (which worked), and mostly get new episodes of things fine. However, every now and then, I come across an episode that has available downloads that have been properly categorized in NZBGeek, but Sonarr does not detect them, even with a manual search.
If you want to test this, PM me and I will give you an example of one that’s doing it right now.