Why can't I connect to the new Facebook Channel option?

With the new Fb Channel option, I’m now unable to connect, it keeps sending a message saying the administrator (which I am) needs to grant permission.

I set up the previous FB channel with no issue but its now disconnected and won’t let me connect to the new version.

Any suggestions?

I had the same issue, however 48 hours later it was listed on my facebook channel and all is working. Not sure why or how but been fine since. I just gave up and closed the windows.