I currently have Paypal Advanced credentials but I'm taking a turn in the development of my site. I want to use a more integrated form of payments so I'll be using the API in my Ruby on Rails webapp. I don't know if I'm misunderstanding what I'm reading but are integrated payments through the API supported for Paypal Standard and Paypal Pro? I would prefer to use Paypal Advanced since that's what I have now. Will I have to upgrade to Pro or revert to standard payments or will Paypal Advanced payments function properly?
