Ultimate Facebook - permissions settings issue

Greetings,
I can not configure settings in the Ultimate Facebook plugin.
After entering "Allowing permissions" settings I see blinking progress bar under "Reset auth tokens " button (see attached picture) and I can do nothing here.
I created FB app before and set all privileges (have green check mark under "Facebook API" settings.
I think due to failed configuration of "permission settings" I can not properly configure "Autopost to Facebook" settings - can not select user (blank field), and only available target is Facebook wall (see next attached file).
Can You please help me?

best regards,
Artur