Trying to install/run VueScan with Flatpack

Flatpak is activated on my updated Manjaro/XFCE system … and I used Pamac 10.3.0-1 to install VueScan (flatpak) directly.
I can see the VueScan files located in ~/.var/app but cannot find the way to start the program that is not listed under my applications.
Help would be appreciated.

Hi, I wonder what is the output when it runs in the terminal?
>> flatpak run com.hamrick.VueScan
Are there any errors?
Ref: Flathub—An app store and build service for Linux