- Usernames should not have any spaces and should only contain letters (a-z), numbers (0-9), and underscores
- The length of a username should be between 5-15 characters
- Passwords should be 6-128 characters, including letters(a-z), numbers(0-9), and symbols(“ ! # $ & ( ) * + , - . : ; < = > ? @ [ ] ^ _ { | } ~ “).
- Passwords should not contain spaces.
Promoted articles