We aren't able to process your payment using your PayPal account at this time : <p>I'm getting this error on a sandbox account:</p>

<blockquote>
  <p>We aren't able to process your payment using your PayPal account at this time. Please go back to the merchant and try using a different payment method.</p>
</blockquote>

<p>My .Net app is successfully redirecting to PayPal, with the correct payment details. As soon as I log in with my sandbox account I get the above error. Is there a way to get to a log or anything that could help me source the issue? It was all working fine until this week, so I wonder has something changed in that time?</p>

<p>I have checked the accounts have a suitable balance. The payment is for €24 so it is not excessive. There are a few other posts regarding the issue but nothing with any suitable suggestions.</p>

<p><a href="https://i.stack.imgur.com/ucujB.jpg"><img src="https://i.stack.imgur.com/ucujB.jpg" alt="enter image description here"></a></p>
