The username is used for your login and is displayed below your magazines.
Guidelines for the username:
Can be between 5 – 30 characters long
Can only contain letters (AZ) and numbers (0-9)
Can contain uppercase and lowercase letters and numbers
Can contain “.”
Must not contain any Special characters such as German Umlauts “öäü”
Must not contain any special characters ($ & § “! * / _ + [], Etc.)
No space character
Domain logic for your user name:
Yumpu.com creates a userhub for every user. This Userhub is always available via https://www.yumpu.com/user/USERNAME. In the hub you can see all magazines from a user which he made public. New magazines are always displayed
at the top.