'WorldPay Error: 2, The entity name must immediately follow the '&' in the entity reference.'
I wonder why the explanations of errors are always in complete gobbledegook?
PS I have just bought some more credits without any actual problems, once I had twigged that when you click on 'Buy x credits' at the
bottom of the page, the purchase is added in small print to your basket at the
top of the page, which I can't see without scrolling up again.
However the procedure is more complicated, clunkier and therefore much slower than it used to be, and includes a screen that talks about 'shipping details' which is of course completely irrelevant and serves only to delay completion of the purchase as far as I can see.