Hi. I have been using Paypal standard with Opencart V1.5.6.4. Recently, I have upgraded to Opencart 3.03.2 and with exactly the same settings, When customers try to purchase a product, they are getting the following error message "PAYPAL: Things don't appear to be working at the moment. Please try again later."
This happens in Sandbox mode, Live mode, Sales and Authorise Modes.
I have checked the email name is correct and other settings are as they were.
Help appreciated.
