[ ] label it “Show All” instead of “+”, more explicit
[ ] when it shows all, leave the extra button, but have the label be “Show Less” instead
[ ] next to that last button (show more/less), add a simple link, not a button “Configure”, or the configure icon with the “gear” icon, that simply brings you to the “Profile” page. It just indirectly explains where you can change what is displayed and what is not.
A few suggestions: