Invalid Username.You must have at least 4 characters and a max of 14 characters in your username.

Invalid Username.You must have at least 4 characters and a max of 14 characters in your username. 这句话啥意思?You have specified an incorrect or inactive username, or an invalid password. 翻译下Username contains invalid character. Invalid username given.Please try rt username 不行啊 提示：Invalid username/password combination.Please try again.怎么办 username contains invalid characters.it may only use a-z,0-9 Please correct the issues below: Invalid Username, should be 4-12 alphanumerals in length 是什么意 Invalid You have entered an invalid username or password.Please press the back button,enter the correct details and try again.Don't forget that the password is case sensitive.Forgotten your password?Click here!You have used 0 out of 5 login attempts.After al the serial you entered is invalid是什么意思? the activationkey you entered is invalid是什么意思 You have entered an invalid secunity Password sorry,you used an invalid character in The username or password you entered is incorrect什么意思 Sorry,you have entered an incorrect username and/or password. 美服英雄联盟,出现了Invalid username/password combination.Please try again.怎么回事?密码和账号绝对正确,重新申请一个也是如此 当我输入后,出现这句：Username invalid可不可以顺便说一下在国外的网站注册用户名,应该输入怎样的用户名,