Payments and receipts

Why can’t I see my payment receipts?
Is it possible to delete the payment history?
How can I download receipts for my payment?
I am having problems adding my payment method. What should I do?
Is it possible to have more than one linked card?
PSD2 — The new standard for online payments in e-commerce stores
I have found a charge which I do not recognise in my account. What should I do?
I discovered a duplicate payment on my account. What should I do?
How do upfront payments work? Is there a charge for the application?
How do I add a payment method?