Starling online card payment code

Hello guys…
Someone knows what its for?

I have to generate code to confirm online purchase?

Only if requested during the transaction, it seems.

The guidance could be clearer, methinks.


Having had SMS codes before, I got an in-app notification for 3D Secure today - clicking on the notification gave a network error, but I could close the app, reopen it, and got a button under the pulse to click and approve.