ios - Facebook authentication is giving 'You have already authorized' message -


i using facebook sdk's fbsdkloginmanager() signup , login users app. similar many other questions posted on stackoverflow, running error message 'you have authorized'. on quick glance question might seem duplicate, have researched posted solutions questions and, suggested on solutions, ensured following has been set correctly:

1) set configured ios sso: enabled (as suggested here: facebook login give me authorized app without automatic returning app)

2) connect appdelegate class fbsdkapplicationdelegate object

3) before initiating fb login process, checking if fbsdkaccesstoken.currentaccesstoken nil or has value in it. (as suggested here: you have authorized facebook, ios)

despite above setups, still seeing 'you have authorized' message. appreciate further insights solving problem else has been similar situation in past. thanks.