I received an email from a partner manager for the Shopify App Store and he tells me that the company to which the app belongs has not been using Shopify’s Billing API and this is actually a violation of the Partner Agreement.
My question is:
What kind of billing do I have to use, if my app is: Free to install
That is weird - in their FAQ they state you must implement Shopify’s Billing API if your app is not free and that you cannot use alternative payment methods for your app.
Sorry, can’t be of more help but would be very curious what @Shopify have to say to this.
If that doesn’t work out, try the trial_days and trial_ends_on properties and set them real high, fiddle around to see what values Shopify lets you put in there.
Haven’t tried these myself so here’s hoping it works out for you and you report back with a solution