title: Can I use the Sandbox and Add to Cart buttons for testing?
body: <p>Basically, what I want know is whether or not one can test Add to Cart buttons via the sandbox.  </p>
  
  <p>I have an Add to Cart button.  I click on on it.  I am directed to <a href="https://www.sandbox.paypal.com/cgi-bin/webscr" rel="nofollow">https://www.sandbox.paypal.com/cgi-bin/webscr</a> and asked to click on a link to log me into Paypal.  I do that and then I am directed to developer.paypal.com where I click on "See our New Sandbox."  I then am told to log in again, which I do.  the page refreshes and I am logged in.  I click on the See Our New Sandbox link again and I see two sandbox accounts, a Business and a Personal.  I expand the personal and click on the sandbox link and I am directed to sadbox.paypal.com, where I am asked to log in.  I log in ( with my Paypal account ) and then I am asked to click a link to log in to the sandbox, which I do, and once more I am at developer.sandbox.com, with a "See our New Sandbox" link.  Click on that link and the circular logging in starts again.</p>
  
  <p>I've tried this on IE, Firefox, Chrome, a separate computer, clearing cache and cookies, and even using an Incognito window, but still the same loop.</p>
  
  <ol>
  <li>Click Add to Cart</li>
  <li>Go to Sandbox</li>
  <li>Click link to log me in to PayPal</li>
  <li>Click on See Our New Sandbox</li>
  <li>Login again.</li>
  <li>Click on See Our New Sandbox.</li>
  <li>Go to one of my sandbox accounts and click on sandbox site link.</li>
  <li>Directed to sandbox.paypal.com, log in.</li>
  <li>Asked to click link to login.</li>
  <li>Directed to developer.sandbox.com, click on See Our New Sandbox.</li>
  <li>Go to 6</li>
  </ol>
  
  <p>Months ago, the Sandbox worked great, but now?  Loop after loop.  Is this being addressed?  Can one actually use the Sandbox for Add to Cart buttons?  T</p>