Shopify Customer Accounts and Log-In (Shopify)
If you have the Storefront customer portal enabled, customers will be able to log in to your store and click a Manage Subscriptions link.
A customer just made an order - where is their account?
When someone makes an order with Recharge, that does not automatically create a Shopify customer account for them as there is no password provided.
However, if that customer were then to register an account with the same email address, their previous order will be automatically connected and they will be able to manage their subscriptions.
If a customer were to register with a different email and were to try to go to their manage subscriptions link, they'll receive a notice that they have no subscriptions and need to make sure to register with the same email they used to order.