Cannot connect to Facebook

Plugin version 2.2.0
WooCommerce version 4.7.1

Running through the process of connecting to Facebook and see success message:

https://www.dropbox.com/s/oojtdwot9iw6sto/facebook-2.png?dl=0

Clicking “Done” then shows this error:

https://www.dropbox.com/s/vujo4lr3gut3zg9/facebook-1.png?dl=0

I enabled all toggles during the process, including the “Manage my business” toggle:

https://www.dropbox.com/s/pu44zpy7s812uvi/facebook-a.png?dl=0

I’ve also checked the value of “wc_facebook_external_business_id” and it is pure ASCII characters – simply the name of the site.

Adding the debug hook function provides additional output. I’ve redacted the IDs etc., but here’s the essential parts;

Please try again - Could not assign System User to asset: REDACTED -POST https://graph.facebook.com/v7.0/REDACTED/assigned_users?user=REDACTED&tasks=MANAGE&access_token=REDACTEDresulted in a500 Internal Server Errorresponse: {"error":{"message":"An unexpected error has occurred. Please retry your request later.","type":"OAuthException","is_transient":true,"code":2,"fbtrace_id":"REDACTED"}}