Hi, within my mobile app I want to have a credit card and PayPal payment option. My app is developed using react-native framework and backend(server side) using Nodejs. For now I have created a paypal business account. My question is: What do I need to do to enable users to pay without paypal accounts as well as through pay pal accounts? I have come across a statement that paypal rest api no longer supports direct credit card payments and that I need to use braintree... Is this true? Also in the documentation I read about guest-payments but there is no example on how to setup or use this.