You can add a bank account to Fave by following the steps below:  

1. Open Fave app 

2. In the top left, tap 3 lines to view 'Account & settings' and then go to 'Manage UPI accounts' 

3. Tap Link other account 

4. Choose your bank from the list. If you don’t see your bank, it doesn’t work with Fave yet 

Note: You might need to give Fave permission to send a verification SMS to your bank