By default when you create an HMI with WebIQ Designer you will always be shown the login form when you access the HMI via a browser, there's no way around logging in. The only way this can happen as described if you enabled auto-login in your HMI, because then it does just that - it logs you in automatically whenever you open the HMI with the specified user automatically. To create a logout button simply use a normal IQ button, add the UI Action "logout (final)" and (of course) you have to disable auto-login for that UI action call then:
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