Your comments

You cannot do it using Android app. Go to the actual website to your profile

I absolutely agree, This first of all will numbers of new users for marketplaces. How would I know if if to join a certain author's marketplace if i cannot read anything basically posted more than 10 days ago. Terrible idea from business perspective.

Greed always win imo. Only small subset of users is going to pay $30 per month to have access to  the " more 10 days old" content. Idea is terrible from the marketing perspective. Why would i pay $30 if i dont know how certain authors writes, etc.