To login to the Amp Onsite system from the mobile app, you must supply the following credentials:
Account - The account name and server subdomain. When you access the web portal, the subdomain is the first word of the url (<account>.amponsite.com).
Username - The username you were assigned for your user account
Password - Your password
Press the Sign In button and you will be taken to the dashboard. As long as you do not log out, the app will remember your user. The app can be used in both online and offline modes with the ability to sync data from the dashboard.