Ultimate Facebook and Facebook Comments

Hi,
has someone an easy workflow how to setup correctly Facebook Comments with Ultimate FB plugin?
I spent many hours with this plugin, it works for some installations but mostly in 80% cases I have problem to get the fb comments to appear :slight_frown:

Why the plugin "Facebook Comments by Fat Panda" is working with every my WP installation and the Ultimate FB is so difficult to setup?

Best,
Damian