I purchased a lifetime Office Professional 2021 license and received the product key. I downloaded the Setup exe and ran it. I figured it would automatically upgrade my 2019 Office. It didn't. So I uninstalled both the 2019 and 2021 versions, rebooted, then installed again the 2021 setup exe. When I go into Excel it says that I'm still using 2019. How can this be given that I uninstalled it? And why can't I seem to access 2021? When I scroll through the installed apps neither of these appear. Only an Office 365 logo that launches something to do with Office 365. Nothing is making any sense here. Please assist. Thanks!