Klarna allow you to split payments for online purchases, so you can buy a sofa in three installments or indeed, a pair of shoes or some comics. They like to call it ‘post-payment’. Or ‘debt’.
If they assigned you a caseworker (this probably isn’t actually a thing) you can assume you’re in big trouble, money-wise.
https://en.wikipedia.org/wiki/Klarna
‘fintech’ is such a sinister portmanteau, isn’t it.