Facebook Profile link is not saved

I tried both registering a new user and logging in an existing one.

I created two fields on the standard user account (no Profile module yet) to test the import of the facebook profile link (or ID):

• a Link field, with widget "URL field"
• a Text field

At /admin/config/people/fboauth I set both fields to be populated by the "[link] Facebook profile link"

Clicking on the FB connect button (by the provided block) will log in or create an account, will even save the User Picture, but won't save the Facebook Profile Link :(

PS: the FB App is not yet submitted for review, but I tried with FB users which are admins in the App