Thanks for reaching out. If you haven't heard back yet, this means your channel is being held for a second review and we'll be putting more effort/resources into additional reviews of your content. Thanks for your continued patience!
Our Help Center article on what kind of content can be monetized give you more insights on it: https://goo.gl/qK253o . Also, learn more about our YouTube Partner Program policies here: https://goo.gl/92VXqo . Hope this helps clarify things for you.