General rules for usernames and passwords
Usernames and passwords are case-sensitive. ASCII
characters in the range of 33-126 are valid, including:
A through Z uppercase characters
a through z lower case characters
0 through 9 numeric characters
Special characters ‘ ~ ! @ # $ % ^ & * ( ) - _ = + [ ] { } \ | ; : ‘ “ , < > / ?.
NOTE:
The SPACE character is allowed to form a username or password pass-phrase. The username must be in quotes, for example “The little brown fox”. A space is not allowed as part of a username without the quotes. A password that includes a space or spaces should not have quotes.