Please close all Modern UI apps before running the program (or just close the ones you want to backup of)
CloneApp UA is a small portable program that allows you to take a backup of the installed Modern UI apps data. UE stands in this case for Universal Apps, the Universal Windows Platform (UWP) apps or truly modern universal apps.
Read more about CloneApp UA in the blog post here.
Note To let the program save its configuration, please enable under Info > Export app configuration