Problem adding user

I have a new EX2, upgraded to OS5. When I add a user, this works well. But when I want to invite the user to cloud acces by sending an email, the system says “Updating” and stays like that. Nothing happens. I have tried with several users and email addresses. Anyone who managed to solve this problem?


You may refer to the following KBA:

Thanks but the answer does not help. It is not possible to share any resources for some reason.