You have to enter your date of birth, or whatever date of birth you put on the account when you created your Habbo for security reasons. It's a way of making sure it is you changing the account details and not a scammer.
NOTE: Make sure you know the date of birth on your account. It is a good idea to put in your real date of birth as you won't forget that.
Why do I have to enter my date of birth to change my account details?
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