Go to "General Settings" and next to "Admin Password" click "Change".
Edit the "config.json" file in the "app_data" folder, and set the "adminpw" to an empty string (""), and restart the web-site.
All Simple Deploy settings are stored in the "config.json" file in the "app_data" folder. Make a copy this.
Go to the repository's "Settings" tab, then "Webhooks", and click "Add webhook".