Let me preface this by saying that I'm not the developer, so bear with me.
My developer is building a recurring/subscription billing app to use with authroize.net (we can't use stripe).
The problem is that shopify doesn't appear to allow any sort of access to the checkout page/info.
As there are other 'recurring billing' apps out there, I know this is possible.
Can anyone tell me how to access the checkout info? Or, who I should ask?