Where can I have a look at all users registered?

You might want to view the list of all users to check for inconsistencies, correct spelling, etc.

To get to the list of all users follow:

Overview => User and Participant Management => List of All Users

You can also export all users to process them for instance in Excel, if you prefer.

If any error is found, user details can be modified if you click on "Edit" in the right column of the list of users.