How do apps like ShipStation gain approval to charge merchants outside of the Shopify Billing API? This is a checkbox in the app listing when submitting for review:
Our app is for existing users to import their Shopify shipments, so there's no need to charge the customer double through the Shopify Billing API. Other than submitting a support ticket and waiting a few weeks, is there another way to gain approval? Maybe I missed it. I've heard app reviews can take a long time, so I wish there were some way to gain external charges approval before submitting the app for review.