If you find your Startup Folder and move or delete the Classic Menu template from it, your problem will go away. That is the cause of your problem screen.


If it is not there, you need to disable it from within Word. Write back and I or someone else can help you with that. There are links to directions here, as well. Add-Ins in Microsoft Word



Note, there is nothing wrong with using Add-Ins, it is just that this one wants you to pay for using it. There may also be instructions for disabling it on their website.
Actually, I just found them:
https://www.officeclassicmenu.com/en...Uninstallation


Again, you can find a very similar Add-In for Word only on Greg Maxey's site. It is free and does not have annoying pop-ups.