The left side of the fascia at 221 Coulsdon Road shows PayPoint, the National Lottery bird and the TfL Oyster mark. That is why this page exists. It is not a PayPoint shop locator and not a TfL help page.
If you need to pay a bill, buy a lottery ticket or top up an Oyster card, ask at the counter. A sign can stay up after a terminal is down. Phone 020 8407 8440 if the trip is only for that errand.