Exchange Tasks should not be syncing but are

[AC Question]

I use Outlook at work and I have it on my phone to sync my calendar. In 'Settings' on my phone (Moto G4 Play) I have specifically unchecked "Sync tasks" because I do not want them alerting me on my phone. Starting two days ago my phone began alerting me each day to my Outlook tasks. How do I make it stop?

Again, prior to this week this was not a problem.