Looking for logging into the Shopify Api Customer site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Shopify Api Customer site. After that you can login as usual with your login credentials.
https://ecommerce.shopify.com/c/shopify-apis-and-technology/t/which-is-the-customer-login-and-sign-up-api-375211
https://ecommerce.shopify.com/c/shopify-apps/t/logging-in-customers-via-the-api-141721
https://community.shopify.com/c/-/-/m-p/156824
https://community.shopify.com/c/-/-/m-p/345666
https://community.shopify.com/c/-/-/m-p/437791
https://community.shopify.com/c/-/-/m-p/464990
https://help.shopify.com/en/api/reference/customers/customer
https://community.shopify.com/c/-/-/m-p/330324
https://community.shopify.com/c/-/-/m-p/135279
https://ecommerce.shopify.com/c/shopify-apis-and-technology/t/using-shopify-customer-login-for-an-external-app-130458
https://community.shopify.com/c/-/-/m-p/87876
https://help.shopify.com/en/api/reference/plus/user
https://help.shopify.com/en/api/getting-started/authentication