First sorry, desktop mode definitely bad suggestion. ( I got cut off screen too)
Not the arrow button to change the cards, The arrow button after the warning page? so that would mean you're probably talking about the arrow button at the corner of the screen that sends you back to the menu after selecting the loadout, settings or credit.
Interesting, I'm not sure why that wouldn't be working for you, but that one is a forced double-click regardless of the setting. I do agree that one is also a tad close to the edge of the screen as well, I might be able to fix the location that way it's not so close to the edge, and I might be looking to make the menu a little more touch-friendly in my next update.