Click on zilpay browser extension
Click on the top right circle colored icon (in this case its the red/orange blue yellow icon) and you will see this
click on this icon
take out your ledger nano connect to your PC > unlock > navigate to the ZIL app and open the app in your ledger nano
Select ledger and make sure index of HD wallet = 0 > Click import and you are done!
Final result, ledger 0 should appear like so