The UI doesn't expose the password error codes. It just says “You entered an invalid response. For more info, select the help (?) icon.” (The NULL_USERNAME and NULL_EMAIL errors seem to be spurious in this context.)
Reminds me when my daughter made her Roblox account. They had some rule "don't use your real name" but they never asked her for her real name, so couldn't validate. They would arbitrarily fail a lot of chosen usernames that were made up fake names.
When she tried a variation of "Taylor Swift" it worked fine.
Hmm I just made an account two days ago and it told me no words allowed in the own. The email link they sent me to sign up no longer works, so maybe they changed something?
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Your password must be 8 to 30 characters in length and must contain at least one uppercase letter, one lowercase letter, and one number.
Your password is case-sensitive.
You can’t use personal identifiers such as your first or last name, date of birth, or Social Security number in your password.
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Here are some error codes the API returns:
The UI doesn't expose the password error codes. It just says “You entered an invalid response. For more info, select the help (?) icon.” (The NULL_USERNAME and NULL_EMAIL errors seem to be spurious in this context.)