So Apple Pay from v2 branch is working now. But I have two issues:
When tapping on "Cancel" nothing happens. The Apple Pay overlay stays on top of the screen.
When tapping on the upper half (outside of the overlay), it dismisses but the app remains unresponsive - I can neither scroll nor tap anything. I need to restart the app in order to work.
So Apple Pay from v2 branch is working now. But I have two issues:
There is no error.