Opened Firefox this morning and had two tabs from Grammarly asking why I had uninstalled the add-on. Checked in the pull-down menu and, yes, Grammarly is gone. I haven't uninstalled it. How was it uninstalled?
Additional comment - The Duck Duck Go privacy feature was turned on. I turned that off two or three months ago. Again - how?
Bonus question - How would Grammerly know it was installed?