You just upload it to your wordpress plugins directory, and then go into wordpress admin, into the plugins section and click the “Activate” button of the WP Video Locker Plugin.
You can just contact us or open a support ticket in the “Support” section and we will help you fix any problem you might have with our plugin
Currently we support only Facebook, but we are working on support for twitter and Google +, that will be available by the beginning of 2014
Try to disable other plugins that use facebook. If this dont work contact us on firstname.lastname@example.org