I'm sorry we missed moving your AddOn when you updated. We normally catch this when the AddOn is in the moderation queue. I have gone and moved LoTRO Alerts to the 'other' category. I don't remember if that is where it was at in the past so if you'd like it in another category just let me know.
If there are other ones you'd like moved just list their names and the category you'd like them in here. I think the others got moved based on date and you're right its been a long time since the lua api was updated so really old addons should still work.
Sorry for the trouble.