Checkout is in stub mode — add Stripe keys in .env.local to take real cards. Shippo is not configured; paid orders will mock the Shippo Order create. See the repo README for Stripe and Shippo setup.
Zyg-Oh

Purchase label

Shippo is shipping-only. Cards are charged on Stripe first. Use this page (or the Shippo dashboard) to buy a carrier label after an order is paid.

Prefer the Shippo dashboard for day-to-day labels. This form creates a shipment + transaction when you want to buy a label from the site.