Element 3D is an Add-on from video copilot, it is not natively a part of After Effects. For help with add-ons you would have to go to the manufacturer site: www.videocopilot.net
p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.