I think one of the primary reasons could be the lack of directive here. It’s just a simple forum from the looks of it. I think a vision thread should be there to let members know what this community is all about, and giving them a reason to hangout here.
It also needs a variety of different categories and sub-categories. For now, it seems there’s only General and Animation where someone would want to post something. Maybe a Category where we can ask a question regarding a software we are using and can’t seem to find out how to do it. Or maybe a category to ask feedback regarding any WIP/Completed works of animation the person has worked on.
I think Anime Discussion in general should be left out, but discussing a scene of an anime in regards to its production should be looked into. Kinda like what happened in the thread I posted about the dance. With seasonal anime, there will always be a scene to talk about.
As for Daily Drawings, it will be very overwhelming for participants and for the one who is maintaining it. A weekly or monthly challenge would be ideal for now, once there are enough challenges, we could just reuse those in daily challenges eventually. And rather than drawing, it should animation related since this is a community for Anime.
Lastly, one possibility would be that your Youtube channel hasn’t posted anything new yet, so people may kinda think that its a dead community. What you guys do is definitely hard work, and take’s time to produce quality content, but try considering posting at regular intervals, even a video in a month is good rather that posting many videos altogether and then not posting for a long time. Maybe start a thread here so that you can ask for ideas for the next videos, or maybe discuss an idea of a video that you already have.
PS: I was gonna reply earlier but my cat was sleeping on my keyboard, so…
Edit: Also, place the Announcement category at the top of all.