Your Two Fifteen account cannot be linked to multiple Shopify stores

As a Two Fifteen account is free, you would need to register an additional account with a new email address to link in your second store.

*Whilst it is not possible to link two of the same integration ie Shopify to the same account, it is possible to link two different integrations. For instance an account linked to Shopify and an Etsy store and run them from the same Two Fifteen account.