It looks like your Meta account is not linked to your other accounts.
Go to the accounts tab (underneath the gray autobiography box in the profile), and click on the button to associate your account with the others.
Edit: It looks like your other 3 accounts are listed under your Meta profile, so it may be as simple as de-associating your accounts and re-associating them.
You should then get the association bonus for your Meta account as well.
In the accounts tab, in the bottom left hand corner are the 3 buttons. Click the middle one to clear, and then click that button again to reassociate.