Atlas password requirements are:

• Must be eight or more characters
• Must contain three of the following:
  lowercase letter (a-z), uppercase letter (A-Z), digit (0-9), or symbol (e.g., ! # $ % & / < = > ? @)
• Must not contain a sequence of three or more characters from your email address, display name, first name, or last name
• Must not match any of your 10 previously used passwords.