Submarine
Submarine helps you build tailored experiences on top of Shopify Plus with features such as subscriptions, memberships, presales, and crowdfunding.
Connecting Submarine
Getting your API Key
You can find your API Key under the Submarine app settings in your Shopify store's admin site.
Adding the Submarine service
When you have your API Key ready, log in to your project then click "Connect Service" on the dashboard page. Click "Submarine" to start configuring your service.
Paste in your API Key and click Save.