Paypal express error: This transaction couldn't be completed.

After I was taken into paypal's website to make the payment, and entered all the information requested by paypal, I got the following message (screen shot attached).  Is this an issue of how I setup the form for payment or is this an issue that I have to contact paypal?  while the screenshot says to contact paypal, there is no link to redirect......

Help please!  Thank you!  Anli

Are you submitting live payment in your form? I did check your form and found that your PayPal Express Integration has Sandbox mode enabled. Please check the screenshot below:

Please check the screenshot below on how to disable sandbox in Paypal Express payment tool:

Please disable sandbox in paypal express tool and test your form again. Do get back to us if the issue persists.