I happened to notice today when adding a new folder to the gallery for groups/nonpairing fanarts and doujinshi, that the settings must have got reset and so it wasn't allowing submissions to the gallery. Not sure how that happened, but it should be all fixed now. Sorry about that if you were trying to submit something and couldn't! You should be able to now ^___^ (Haha I guess that explains the lack of submissions XD)
Anyway, don't forget to check out the Contest!!
Also, if your submission gets declined, it's most likely because it's been submitted to the wrong folder. Please re-submit it in the proper one.