When you create a Panogard account, you automatically get a WorkScape trial license. The trial license lets you monitor up to three computers for up to 10 days free. The trial license has the limitation that it will not allow you to make screenshots with a blur radius of less than 50 or at intervals less than one hour.
When your trial license expires, you must either buy a WorkScape subscription (see the FAQ How do I buy a WorkScape subscription and register my license?) or uninstall WorkScape (see the FAQ How do I uninstall WorkScape?).