Jumped into the offer as I saw potential and, all things said, expected AppSumo to only offer platforms & solutions that are READY to be used.
This one isn't and by a far long margin.

Interface is clunky, UX is terrible, hard to find things around, UI has extremely basic problems, editing users is not possible, adding them to roles is ludicrous and an extra bunch of issues that I am not paid as a beta tester to be revealing for free.

Main reason why you should avoid this soluction:
- You can ONLY create user and assign them ONE role.
- You can NOT update users afterwards.
- You can NOT assign different roles to a same user based on a same email.
- You can ONLY assign users in the brands to according to their own roles.
(which makes somehow sense sure - except that since you can't assign different roles... you are screwed).

Just don't.