Proper way to upgrade ADSelftService

Proper way to upgrade ADSelftService

We have a small AD in the lab with about 30 users and wanted to use the free 50 user system.  I tried to upgrade from 5.3 to 5.3.1 today and it said I need to uninstall.

I then uninstalled and did a reinstall.  Upon choosing the same folder it says "Some files exist in the specified directory. Kindly provide a different".

Did I lose my config?  I did a backup but what gives, how do you upgrade this thing??
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                  New to ADSelfService Plus?