Microsoft Planner Issue on macOS

Hi all,

one of my users reported issue on his MS Planner app (online version).

He creates a plan (so he is the owner), but he can't delete the plan.

I've had call with him, a the option "Delete This Plan" is not showing at all.

He was doing all the right steps, but the option to delete its simply not there.

User is currently on macOS - Mojave.

What we tried:

1.) he tried to delete it from Chrome & Safari - no luck;

2.) he cleaned cache & cookies in both browsers - no luck;

3.) he tried in incognito - no luck;

4.) he tried sign out/sign in several times - no luck;

Any other idea what could it be?

Kr,

Dino