GitHub configuration settings

To show GitHub login button, you have to enable the option Enable GitHub Login that you can find in the plugin option panel.

GitHub plugin settings

Access to GitHub and create a new application.
PLEASE, NOTE: insert the URL, that you find in the plugin settings dashboard, in the “Authorization callback URL” field.

GitHub - Callback Url

Register form

Now that you have created your application, you will find the data required in the plugin.