When you try to use Facebook login you can see the failure message below:
This does not mean that app developer is aware that. As an App developer other user can easily use facebook login option but some of them can not. This is not related with app developer settings but its about your account and facebook.
Most propobly your account is evaluated as suspicious by facebook and there is not a solution for now. This topic will be updated as soon as we find a solution for this problem.
You can try facebook login with a personal account and most propably login system will work.
This does not mean that app developer is aware that. As an App developer other user can easily use facebook login option but some of them can not. This is not related with app developer settings but its about your account and facebook.
Most propobly your account is evaluated as suspicious by facebook and there is not a solution for now. This topic will be updated as soon as we find a solution for this problem.
You can try facebook login with a personal account and most propably login system will work.