In the current card overview you have to scroll down to get to loyalty cards. Since I more often would use a loyalty card than change my card settings it would be more logical to have it on top for me.

I got the same issue with my Maestro card at a gas station and a parking garage. Both of these give a "card not accepted here" message. My Bunq Mastercard works fine in those cases.

My bunq Maestro card didn't work at many places, be sure to use your Mastercard. Also, contactless payments never worked for me, even with the Mastercard. If you run into this, try sticking the card in the payment terminal.

I think it is handy since you can use it while having another app open.
Also, you might be able to use it on the lock screen this way!

It would be nice to see the Tap & Pay option in the Quick Settings menu on Android (The one you drag down from the top of your screen)

https://codelabs.developers.google.com/codelabs/android-n-quick-settings/index.html

November 2016, though this is my first month trying premium!