title: Paypal Sandbox Test Account login?
body: <p>Unable to login with Test Account</p>
  
  <p>Repro:</p>
  
  <p>1) Created Test Account on "developer.paypal.com".</p>
  
  <p>2) On "Paypal.com" created a button and added it to my site.</p>
  
  <p>3) Changed the button code to include sandbox as in:</p>
  
  <pre><code>&lt;form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post"&gt;
  </code></pre>
  
  <p>4) Setup Instant Payment Notification (IPN) on paypal.com</p>
  
  <p>5) On "developer.paypal.com" logged into the "Enter Sandbox Test Site".</p>
  
  <p>6) Opening my site in a new tab in the same browser.</p>
  
  <p>Note: IPN - if you have more than one site, it is up to you how to handle this, no link between site and IPN, right?</p>
  
  <pre><code>The Problem I am getting is this - what is wrong?
  
  PayPal cannot process this transaction because of a problem with the seller's website. Please contact the seller directly to resolve this problem.
  </code></pre>
  
  <p>Notes:</p>
  
  <ol>
  <li><p>I works if I am removing "sandbox" from the form action?</p></li>
  <li><p>At some point it gave me a site, saying loging to developer.paypal.com or something.</p></li>
  </ol>
  
  <p>After two days, 10 hours of... you know trying and trying, I am not in a happy place anymore.
  Thanks in advance
  Regards</p>