http://productivity.stackexchange.com/users/660/inquilinekea?tab=accounts is where all my accounts are. And I did try to clear account associations. But to no avail.
In order to get the reputation bonus, you have to associate your accounts from the site where you have 200+ rep. Initiating the association from a child site like Productivity will not work.
So in your case, you'll probably want to initiate the account association from either Astronomy or Meta, where you have over 200 points.