if your app is linked but not marked for spoilers, it will not be processed that week

If I read that right, you just have to put up that there are spoilers in your ap so you can link it...which means that anything that could be a spoiler for a canon (and yes some older canons still have considered spoilers; for example: there is a character who's background in Weiss is not known by everyone and it would be a major issue to someone who is watching or wanting to watch w/out knowing this) would make it possible for you to link your ap.