I have a Zoho Support site (still in trial mode) and I have invited a couple other people to be agents on my site. One of the people said that when she opened up the invitation, an error popped up. I tried to re-invite her, but it said that only people who are active or uncomfirmed can be re-invited. Technically, she is under my active list, so I don't know why I can't invite her in. Can you help me make sure that my fellow agents can log in?