I want to upgrade from SDL Trados Freelance 2017 to 2019 but get an error message to delete 2007 first.

I wanted to install the upgrade from 2017 to 2019 but got an error message that I have to delete 2007 first. This message also appeared a short while ago when I wanted to install general updates.

Opening my programme list, I don't even see an installed programm SDL Trado 2007 - just as an icon on my desktop screen.

 

Any advise what to do?

Thanks