During the trial period the identity of the MSIX package will have
FireGiantMsixTrial. prepended. In other words if you have the following code:
<fga:Msix Id="Example" Publisher="CN=Example" Target="desktop" />
Then the identity of the resulting package will be
FireGiantMsixTrial.Example. This is the identity you will use in PowerShell scripts to find and uninstall the packages.
Naturally, this prefix will not be added you purchase a license for the WiX Expansion Pack with the FireGiant Enterprise Support Program.