After clicking "Use a different address" hitting enter should submit the "Use this instead" button

webapp/components/signup_team_complete/components/team_signup_welcome_page.jsx

@@ -96,9 +96,13 @@ class TeamSignupWelcomePage extends React.Component {
     }
     handleKeyPress(event) {
         if (event.keyCode === 13) {
+            if (this.state.useDiff) {
+                this.handleDiffSubmit(event);
+            } else {
                 this.submitNext(event);
             }
         }
+    }
     componentWillUnmount() {
         document.removeEventListener('keyup', this.handleKeyPress, false);
     }