Want to remove version 7 as I have also installed version 8

I first downloaded em Client version 7 from the Microsoft store and installed it, configured my account and even imported old PST database.

Later I found version 8 on your website, which I installed too.

Now, I am unable to remove the version 7 from my machine. Whenever I try to uninstall, it takes me to the Add/Remove Software screen on my Windows 10 and there I could see only one em Cient installed. If I remove that, it will remove both the versions.

Please suggest how to remove version 7 only