some of the providers block torrentday tracker as the activity (upload and download) consumes all of the bandwidth of the server (as you know this tracker have a huge member base). Not all, but quite a few seedbox providers blocks any seeding on this tracker, or maybe you will have to find a new one.
lucky for our customers, we do not block our 100mbps seedboxes for any tracker,in-short it is open for any tracker.
Torrentday do support latest version of ruTorrent and yes, it is a private tracker!

cheers.