username should contain alphabets,numbers什么意思
username should contain alphabets,numbers什么意思
Username can only contain letters,numbers and underscoress什么
Display name must be alphabets or numbers什么意思
Username must contain only letters and numbers.No special ch
Username length should be 4-20 characters and contain alphan
1.Your username can only contain letters A-Z or numbers 0-9
The username may only contain letters and numbers (A-z,0-9)
Username 什么意思?
characters combination of alphabets and numbers是什么意思
swapped numbers什么意思
this username is available什么意思?
The username or password you entered is incorrect什么意思