Unfortunately, you cannot change your Team account’s email. Otherwise, you can delete your account and create a new one again. For now, this is the only way.
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In order to delete your account please go to your Profile, scroll down and click Delete my email. Our Team will take care of your request and you will receive an email confirmation that your account was deleted. In the meantime, you can create a new account with the desirable email for yourself. You can find a short step-by-step guide on how to do it here.