Stripe Credit or Debit Requirement

Hello, 
I received an email from a client we set up a long time ago with Joomdonation using Stripe. There is now a field appearing in the Card checkout section, requiring the user indicate if their card is a credit or debit card, but there is no field option for them to choose from. I'm attaching a screenshot for reference.

I don't recall this being there previously and am a bit stymied as to where it might have been added from, so I can turn it off. It doesn't seem to be an option in the Stripe Payment Plugin, but maybe I'm missing something.

Any ideas?

Thanks,
Mal