The FTX card will automatically spend from your USD balance and then from the asset with the highest balance.
The following steps will assist you in selecting a funding source so that you can use your FTX US Debit Card with your preferred asset.
If you have still not applied for your FTX US Debit Card, please follow this guide to do so.
1. Log in to your ftx.us account.
2. Select “Wallet” in the top left banner.
3. Select “FTX Card”.
4. Select "Change Preferred Currency".
5. Select the asset that you wish to be spent using the drop down menu and click "Submit".
Feel free to contact us regarding any issues with your FTX US debit card at ftx.us/support.