title: paypal sandbox empty after login
body: <p>The <code>Paypal sandbox system</code> is completely out of order. After dealing with many different issues (such as login cookies issue), now a new issue has come and I cant find a way to solve it.</p>
  
  <p>Using <code>express checkout</code>, after reaching paypal sandbox page it will show cart preview on the left, and on the right it will show login section. Then when I login with sandbox buyers id, the right section just goes blank... nothing... no redirect, no pay button, no nothing.</p>
  
  <p>Anyone got any idea?</p>