I suspect what has happened here is that you specified a non-default installation path and then requested a 'Per User' installation. 'Per User' installations will ignore the installation path as they always install to the same location - %LocalAppData%\Programs\LogViewPlus. I will update the documentation to reflect this.
To set the install path, please install LogViewPlus for 'All Users'. This action will require administrator permissions.
I can see that the flow of the install wizard is a bit confusing here as the path should not be shown at all if it will not be changed. I will raise this issue with our third-party install provider.
Hope that helps,