Currently the PPS column icons appear to be a dash for no invitations have been issued, a page with an arrow for invitations issued, and webpage with a green tick for an account has been activated.

There is one gap there which is all invited accounts have been activated. It would be useful to see at a glance the state of all accounts. I'd suggest retaining the existing icons, but set the one with the green tick as all accounts have been created and then introduce something like that but with a yellow warning triangle on it.

Given the recent update that allows the column to be sorted, this would add an extra touch of usability.

At the same time, please introduce "screentip" type labels that appear when hovering over the icons to help people understand what the mean.