Zend certified PHP/Magento developer

Magento 2.4.2 – PayPal issues – A wrong PayPal Express Checkout Token is specified

We have a problem with our Magento 2.4 website with PayPal All-in-One Payment Solution (Website Payment Standard) payment method. Some of our customers are getting an error when trying to make a payment, the error message says:

“A wrong PayPal Express Checkout Token is specified.”

The error is presented to the customer after they were redirected to PayPal, logged in to their account and attempted to make a payment by clicking on the “Pay Now” button. Instead of being redirected back to our website’s success page, they are getting redirected back to their shopping cart with a message of “A wrong PayPal Express Checkout Token is specified.”. This is not impacting all our customers; however, the numbers are increasingly impacting our revenue.

I can’t find a solution that works.