Two factor authentication adds an additional layer of security to your account by requiring a numeric code from another device (most commonly mobile phones) when you log in.
<x id="START_TAG_STRONG" ctype="x-strong" equiv-text="<strong>"/>Check your emails<x id="CLOSE_TAG_STRONG" ctype="x-strong" equiv-text="</strong>"/> to validate your account and complete your registration request.
If you remove this user, you won't be able to create another user or channel with <strong><x id="PH" equiv-text="user.username"/></strong> username!