The uninstaller won't remove anything that it did not install itself.
And some things that it did install it will leave when uninstalling - such as the license file and other user settings. (Some messed up installs actually did remove the license file and user data but this latest one should not).
You can change the folders in the V7 Scan Tool properties window.
V7 is not configured for roaming profiles. (Version 8 is/will be).
Regards
Paul