Hi Tom! I'm a new user to GameEx. Love the frontend and its Steam support!
I, too, am having the same issues with the frontend not updating the Steam list with the installed software from my Steam library. Hopefully, you can have it fixed soon as I would like to show off a few games via GameEx at an upcoming sci-fi convention in a few weeks.
Could I also recommend a refresh feature where GameEx will update the Steam list with any change to the installed library be it new installation, new snaps, videos or uninstallation of a file or two? It would be very appreciated. Thanks.