I am having the same issue as you had where is says my account can not be accessed but I have checked everything seems to be good. privacy,Url, Api, and I tryed to remove the "/" from the end of the url and stil get the account can not be accessed.
Update: watched the tutorial and figured out what i was doing wrong altho i didnt know i was doing anything wrong. I was pasting my entire url into launch box and all it wanted was my name not the whole url