1) Log into the App Builder and navigate to the Integrations menu on the left-hand side
2) From the integrations menu, select 'Custom Payment Options'
3) The first option is for your default Credit Card processor. Please select one of the following from the dropdown. If you select none, your app will default to a webview checkout
4) Below the credit card options are additional checkout options that can appear in your app. All of these will be webview checkout, but offer clear options for your customers to checkout with.