As long as you have funds available in your US Debit Account, you can fund your Coba Mexico Mastercard in the ‘Cards’ section and tapping on Coba Mexico Card. While located in this section you select ‘Add funds’.

The way the card is funded when you select ‘Add funds’ is taking USD funds from your US Deposit Account and Coba will display the current FX rate to convert your USD to MXN.