Others have already mentioned that it only shows up for compatible devices, but why would you want it to show below the payment form? That means a user would st

Others have already mentioned that it only shows up for compatible devices, but why would you want it to show below the payment form? That means a user would start filling in the form before realizing there's an alternate payment method. That seems like bad UX to me. The only thing that's jarring to me is how the button takes the full width of the screen. This is just me nitpicking though, the design otherwise looks great!