Djohn says there are several options, and indeed there are - to suit almost every possibility.
I would try another installation without uninstalling first....... but choose the path that acknowledges the existing account, and then allows a new installation. Also copy existing files to this new installion. Just follow the prompts very carefully.
This will keep the filing cabinet and anything left in the download manager but reset the connection for you. When finished there may be a version 6 and two versions of 8, the latest one with a (2) in its title.
When satisfied that everything that is needed from the old versions they can be uninstalled individually and completely.
I think Djohn has given the correct solution to the Word shortcut too.