Apps notification settings missing in Teams settings

Hi, I have the exact same issue. I have found solution that helps but is certainly not ideal! Here is the post from another forum:

Loredana Leaha

Hi,

Found the solution, which seems to be documented somewhere but I could honestly not find it.

You need to ask one of your colleagues to delegate a Task in Planner on your name, then the Activity field in Teams will notify you that you have a new Activity, after this step you will be able to see the Planner Application under the Teams Notification Settings.

Such an easy solution, yet I could not find it anywhere. Frustrating!

I wish you a great day!

This works the same in Viva Engage, just post something directly mentioning the employee not seeing the settings, Teams will notify him and the settings should appear.