NEED TO KNOW!
If you have the “Ashampoo Connect” app installed, you need to uninstall it.
There is a new “Ashampoo App” that has replaced it. The old “Connect” app does not work anymore and interferes with the installation.
Once I removed the old app, the LocaLingo installer installed the new App, I was able to log in to my Ashampoo account, and the installation proceeded flawlessly.