In the initial load of your Store, you will be prompted for the
Publishable API key of your store.
You can change both of these later from the
/config?tab=4 route. (see below)
Depending on the environment in which you're setting up your Store (either
live), you need to use the appropriate
Publishable API key. For more information, see Setting Up Stripe.
IMPORTANT The products that you create in your store will be tied to either your test or live key — make sure that you don't set up your entire suite of products on the test key, and then are unable to make your store live!