I am using Facebook login in my android App, and everything worked fine in the debug mode. However, when I published it on Google Play and my friends downloaded it, Facebook login failed, showing this message:
SERVER_ERROR:[code]1675030[message]:Error performing query. [extra]: Errors while executing operation "ProxyAuthAppLoginQuery": At Query.proxy_auth_app_login: Failed to resolve field.
I had added both the DEBUG and RELEASE hash keys already in developers.facebook.com. before I published the App, but login still failed. Where did things go wrong? Thank you for your help.