The company has been trying to break into the buy now, pay later business with a recently launched product called Marqeta Flex. The service brings BNPL from lenders such as Affirm or Klarna to any credit card wherever Mastercard and Visa are accepted.

"It's an orchestration layer, but it's tied to issuing and processing and disputes and chargebacks," CEO Simon Khalaf told CNBC at Money2020 in Las Vegas last week. "So it is not actually a Wild West in BNPL. It is actually very well established. And there is a reason why a lot of people are jumping to it."