I'm integrating sharing of users between a shopify shop & a customer portal, and one of the sepcs is that users that register at the shop should be able to use their shopify logins to access the shop & vice versa.
I've added a Auth0 app to the store as described by the Auth0 dokumentation on the topic, but when trying to log in with a testuser I've registered trough the storefront, I get an error saying: "There's no matching email for this store".
Strangely enough, it automatically logs me when i select the social connection in the auth0 login when I have logged into the store trough the partner dahsboard before doing so.
The store is currently password limited because of it's clearly unfinished state. I do not know if this has anything to do with it?
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This question is well timed.
I was trying to do the exact same thing. If you were following this - https://auth0.com/docs/connections/social/shopify
then it is very misleading, it doesn't work with a customer, it is aimed for account owners and developers.
What you need to do is override the Shopify sign-in and use auth0 sign in. We are still working through this, and it is not as simple as you would think
This may help: https://rovani.net/Shopify-Auth0-Multipass/