I just want a simple Facebook login app for my webshop, which requests the basic permissions (public_profile, email..) from the customers. I want their requested informations in a database. After the successful payment an automatic email will be sent to the primary Facebook email address with an important coupon code. At the same time the App send them a notification on Facebook with a link which is the same as "open this email in browser" (in the sended email).
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