EDIT UPDATE - Please disregard THIS post also, it seems like everything is working correctly now. Maybe FB was having a 'moment'?
My facebook login has just worked but i do not know why, I was in debug mode and stepped through it slowly and then the app page came up. This is unexpected, all I wanted to do was to allow the user to be able to login to their own facebook page. I am obviously misunderstanding something and I assume it has to do with the redirect Url? In firebase the Valid OAuth redirect URI points to my app page. Is this not correct?
To sum up I am trying to have my app extract the public info from a users facebook page so i would think it should log into their page
Any help much appreciated