title: When using PayPal's Sandbox what login do I use when it asks me to log in?
body: <p>I'm developing an application that is trying to use Paypal's Express Checkout. After I <code>SetExpressCheckout</code> and <code>"Success"</code> is returned I redirect to PayPal's Sandbox site with this URL: <code>return Redirect("http://www.sandbox.paypal.com?cmd=_express-checkout&amp;TOKEN=" + viewModel.Last()["TOKEN"]);</code></p>
  
  <p>When I run this from localhost, PayPal says that I need to log in. Now I have a Sandbox login, but I believe I have a Seller test account as well. I think I also need a buyer test account, But whenever I click "New Test Account: Preconfigured" and enter info for a "Buyer" account, it submits but I don't see the new test account anywhere.</p>
  
  <p>So, </p>
  
  <p>A: what login am I supposed to use?</p>
  
  <p>B: where am I supposed to login?</p>
  
  <p>thanks for any help
  <hr>
  btw:
  I know that my initial call to the api is successful:</p>
  
  <p>TOKEN: 
  EC-8EB417855U0122113</p>
  
  <p>TIMESTAMP:
  2011-05-20T19:42:41Z</p>
  
  <p>CORRELATIONID:
  3b01e2f4ae858</p>
  
  <p>ACK:
  Success</p>
  
  <p>VERSION:
  51.0</p>
  
  <p>BUILD:
  1882144</p>