Hi Joao,
Social Sharing provided by loginradius is 100% free. The rest of the loginradius package however is a paid service. If there is a error message regarding your API key you can provide a blank API Key of 00000000-0000-0000-0000-000000000000. Also, if you are seeing red error messages on your front end asking for an API key it’s because you have WP_DEBUG on and an API Key is required. Please keep in mind that if you only use this blank API only sharing will be activated with this plugin.
Hope this helps!
LoginRadius Team
