Argentina - Paying Online

I am currently travelling in Argentina.
I’m trying to buy bus tickets online using my monzo but it isn’t being accepted by the online retailers.
You have to choose whether the card is credit or debit, then indicate that it is Mastercard, then there is a large list of options to choose from - most of which seem specific to Argentina.
I have tried many combinations and with all of them they say that the data I input from the card is invalid.

This isn’t just a monzo problem as the same thing is happening for my wise card!

Has anyone encountered this and found out how to avoid it?

Thank you

Welcome.

I don’t have answers but this thread might!

I used to pay for tidal in Argentinean pesos but it got outlawed - they have currency issues over there and it’s impacting this sort of thing