I got it fixed. Is your Facebook page connected to the FB business manager?
If so then you might be listed at custom and not an Admin on your FB page.
I went to:
FB business manager
People and clicked on my name
Clicked on the asset I have control over
Scrolled down and disabled manage jobs and view earnings
and refreshed my FB page. I was admin again and able to connect the sales channel.
This solved my issue
I sent long angry letter to facebook about this because its so stupid.