The following characters are permitted in the new login:

• Letters (a-z, A-Z)
• Digits (0-9)
• Full stop (.)
• Hyphen (-)
• Underscore (_)

Spaces as well as special characters (other than those mentioned above), umlauts (ä, ö, ü) and the Eszett (ß) are not permitted. Admins can edit usernames in the backend under Account Management > Accounts.