Sharing lists with others outside your organization

This app is a waste of time for home or personal use.  I'm sure it works fine if both people are in the same Office 365 organization and want to share a work to-do list, or are both members of the same company wanting to share things with each other, but for home use people migrating from Wunderlist, just use Todoist instead of waiting for this to get sorted out.  From what I see trying to move from Wunderlist to Microsoft To Do is another Microsoft permissions/group membership/inter-domain federation quagmire to wade through and there are simpler apps that do this much more easily... you don't have to jump through any silly hoops to make it work.