When paying for an order by clicking the "Continue to Paypal" button, the API
only provides a processing icon in the left corner of the browser tab. The suggestion
is to have a processing bar or change the mouse icon so that this step is more
visible. It is easy to think that the button click isn't working properly
causing your customers to click on the button multiple times, potentially causing
more than one payment or the payment process erroring out and forcing process
to be repeated.
USA, Delaware
