In your ether.fi account under the Cash tab, you'll find an "Add to Wallet" button on your card's details screen in the app.
Depending on your region, operating system or device, you may have experience a different flow and requirements compared to others.
Note: If you are asked to Choose a Bank, scroll to the bottom of the list of options and select "Other"
For full details on how to add your card to your device's digital wallet:
For Apple devices:
https://support.apple.com/en-gb/108398For Google devices:
https://support.google.com/pay/india/answer/14253923?hl=en-GB