Hello - I've got Apple Pay working just fine, except not where I need it. My business model is that I sell items at a Live Sale on Instagram, then I send Invoices (Drafts) to customers. Apple Pay is not visible on the checkout page of the Draft Invoice. But it is visible if people go directly to my site, add items to their cart, then checkout. (And I used this article to remove the code from the cart so it would appear on the checkout page, which it does. But again, not on Drafts checkout page.)
Since I really don't sell from my website itself, but only via Draft/Invoice, how can I get Apple Pay to show up on the Draft checkout page?