This section of the Start Screen displays your registration information:

If you have purchased a user license for Presio, the registration area will look like this:

If you are running the free trial version of Presio, when launching the application will be presented with the following screen:

This screen allows you to either Register Presio and begin using the fully activated version OR you can try the full version of Presio, but are limited to publishing 5 presentations.  Once you purchase a license and enter your license information this screen will no longer be displayed. Additionally, if you choose run the free trial the registration information on the Start Screen will look like this: