Ultimate Facebook not working - Elegant Themes Divi

I've installed the plugin to MU and single site. With single site install the Facebook app configuration completes but..

1. doesn't autopost (all the settings are there)

With multisite install I use the same Divi Theme with some typical plugins like WPML (disabled) but the Ultimate Facebook Installation halts to the

Ultimate Facebook settings/Permission&Tokens

I've spent at least 3 hours reading your forum and tested the obvious so my questions are:
a) are the known incompatibilities in my setup
b) should I grant you access to Facebook app threw Roles if I missed something but similar setup works partly on my single site

The single install gave one alert included as an image