I've complained about this before. Why is it not being fixed? It's now almost THREE weeks of on and off not being able to buy C&D postage online via the logged in site.

When you proceed to Payment summary - confirm - pay with debit card - nothing happens. The button just turns grey and doesn't allow you to finalise th purchase. PLEASE FIX IT.

It's not browser or device related and happens on all browsers, all devices.