First question:
we have move the installations-user from the tree in a another organization unit. Now this user with admin-right can't access the configuration over the web-interface.

Second question:
we want to move all user to another organization unit. How can we do it, for becoming any problems?

Third question:
we have define a group with the mobile user, but the user don't synchronize with this user. Is it possible to become the users automatically when we move them in the group