From R4L Help Wiki
R4L account password
Your R4L username and password are the primary source of security for your account. We recommend using a password that you will be able to recall easily, and contains a mix of upper & lower case characters and/or digits.
- Your password must be between 6 and 19 characters long.
- Passwords are CaSe sensitive.
- Valid characters for your password include:
- a-z A-Z 0-9  () !@$^ , . ~ | = - + _