we have wordpress multisite enabled for our wp site

Hi we have wordpress multisite enabled for our wp site in which we have installed the ultimate facebook for main and sub sites of kewo.in but the login not working properly whenever we try to login through facebook nothing is happening, in the errorlog its showing "January 9, 2015 9:09 AM alllaw WDFBModel::get_user_api_token exception Token not found or no Facebook user id was provided" and the facebook comment is not responsive?