I believe most members are aware of your new material. That being said, I do not always get notification from two of my favorite authors, who happen to be women.
However, I find their new material by noticing comments from other members who have left feedback on their recent hubs.
Lastly, members read what they want to read, including yourself and myself.
For example, I have published recent articles that you have not read. Maybe some of your readers get notifications, but are tired of the one-way street wherein they support you, but you do not support them. Food for thought. That is an area that we all have to review...