Ok, here goes.
My app is in Dutch.
I assume you already have added at least one creditcard (if not, first add one), that you want to use to top up your Revolut account.
So go to that card (or add one) by pressing the + on the home screen.
Behind your default card there is a > pointing down, press it:
Behind the card(s) there is an ‘i’, press it.
Now press the ‘A’ for automatic top up.
