Is the Gyrosphere Station damaged, manually disabled, or lacking power?
While you'll typically receive a notification and see an icon for these, the disabled one in particular could be a culprit. Also heard reports about some people having issues with Gyrosphere stations that are connecting to other stations, so they could be spawning at another station, for instance, and they only flow in one direction. If none of these can be discerned and deleting and rebuilding the station doesn't fix it, or reloading a save file, then I would report it as a bug.