title: Why the Microsoft Pay window is empty?
body: <p>My task is to configure the payment system for the UWP application. I use the information from <a href="https://docs.microsoft.com/en-us/windows/uwp/monetize/payment-request" rel="nofollow noreferrer">this documentation</a>.</p>
  
  <p>I ran the example for the first time, and it worked. Then I logged into my account, filled in the payment details and clicked the Buy button. But now the Microsoft Pay window <a href="https://monosnap.com/file/lb8ZlLCZTUSRavM6HZ5ZgmAe3dqMNj" rel="nofollow noreferrer">opens blank</a>. I used a test project from GitHub and the code above. My Microsoft Pay window works fine in the Microsoft store.</p>
  
  <p>I did not change anything in their code, there is no exception. I have no idea where to look for the cause of this problem.</p>
  
  <p><strong>UPD</strong>:
  <a href="https://anotepad.com/notes/65ykp4rm" rel="nofollow noreferrer">JSON of my PaymentRequest</a></p>
  
  <blockquote>
    <p>var request = new PaymentRequest(details, acceptedPaymentMethods, merchantInfo, options, "1");</p>
  </blockquote>