Apologies if this has been asked, I'm been crawling threads and not seeing this exact scenario.
Having a situation where Customers (non licensed users) can open a ticket from the External Portal view, add other users but CANNOT type an email address in even through the option is allowed.
If an Service Desk Agent or Admin (licensed) from internal via (Requested Participant) can add via email, then if they flip to External Portal view and tries the same steps they are successful at adding the new user via 'Share With' again using email address only.
I've been crawling the screens and steps but I can't see a setting that would disallow that for Customers but allowing it for Licensed users and wondering if I'm hitting a licensing issue and not a Customer Permissions problem.
Anyone else seen this or found a way through it