Monzo in South America

I am currently travelling in South America. Monzo seems to be accepted in Chile but never in Bolivia where I am now. Is there a list of those countries where Monzo is accepted so that I can plan my finances?

Further information here;

I’ve tried to use Monzo twice in Bolivia and on both occasions it has been declined. This is strange because Monzo works in Chile although you do have to explain that it is a debit (not a credit) card which seems to affect whether the card works.

Is there a list of countries where Monzo doesn’t work and is anyone at Monzo dealing with this problem?