I recently set up a RSS feed in NZBGet for my NZBgeek account. It works as expected except for the fact that NZBGet doesn't pick up the category info.
I've set up a category in NZBGet (Movies) and set the alias for that as Movies* so that all releases from the larger Movies category on NZBgeek (Movies - SD, Movies - HD etc) get categorized as Movies on NZBGet. I know that the settings on the NZBGet side of things are fine as they are exactly the same as my settings for another indexer that work perfectly.
There are others facing the same issue on the NZBgeek forums and the moderators there seem to think that it is an issue with NZBGet. See this post (https://nzbgeek.info/showthread.php?tid=8744) for example. It's a small issue but it would be great if it could be fixed. Thanks.