Unable to add users to collection

So I have been trying to add uses to the collection and it says it can’t find any user, I have compared the names with AD and the names match… what am I missing?

I have tried AD name (Pre-Windows2000 and user logon name) and display name.
Im not sure if I have to configure anything.
Only things I have configure it has been the MBAM server and the reporting server address

Hello! There is an issue with the tool currently, however there is a workaround.

You can either add domain\username to each of the usernames (that should be two slashes between domain and username, but it’s not rendering correctly here) or you can use %username. either of them should work.