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A username must be between 6 and 20 characters long and can only contain letters (uppercase [A-Z] and lowercase [a-z]), numbers [0-9] and separator characters (period [.], underscore [_] and hyphen [-]). A username must start with a letter and cannot start or end with a separator character. Separator characters cannot be used consecutively.
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A password must be between 8 and 64 characters long and can only contain letters (uppercase [A-Z] and lowercase [a-z]), numbers [0-9] and special characters (at least one of each group is required for a strong password). The following special characters can be used:
!"#$%&\'()*+,-./:;<=>?@[\]^_`{|}~ or a space.
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