Thank you for your attention
I'm using scope=login,vote,comment
and
I have posting authorize
I did try again before this comment ( even I used manualy this link https://app.steemconnect.com/authorize/@qbdp before runing )
but I still get error
error_description:
"Broadcaster account doesn't have permission to broadcast for @qbdp"
I'll read again (and again) your links, thank you so much.