Welcome to the forum.
I am wondering, though, if you have multiple user accounts (or just two) on your computer. I can't say I have ever seen this message before, and I've been around the Corel world for quite a few years now. But it suggests either you or another user of your computer, with a separate user account on it, may have installed Video Studio separately.
There are various ways of finding out if there is another user account: see
https://www.digitalcitizen.life/how-gen ... d-windows/ The third method is probably the quickest or least challenging to someone not experienced enough to use command prompts. You get to to Computer Management, by the way, by going to the Windows Control Panel and selecting Administrative Tools at the very start of that page. Then in the new page which appears, Computer Management is the second item down.