This document walks you through how to log in to your UWGB Subdomain Control Panel, where you can then access the web applications you've installed, like WordPress.
If it's your first time visiting https://uwgb.org, you'll see a page that looks like this.
Click on the middle link (i.e. subdomain.uwgb.org/wp-admin/) to sign into your WordPress Dashboard. This will use the credentials that you created when you originally installed the application.