Merchant can choose whether to use the Shopify Plus checkout (if they have Shopify Plus) or the TapCart checkout.
Shopify Plus Checkout
Change attachment strategy to “Check out” in the Redo Admin dashboard (if attachment strategy is “Check out”, proceed to next step).
Go to Shopify and find the Redo product, then add “TapCart” as a sales channel for the Redo product.
TapCart Checkout
Let us know you want to proceed with the integration and we will create a ticket for engineering to set up the integration