The two-factor authentication must be reactivated via the Control Panel, because the separate applications do not inherit the settings.
Please follow our instructions "Where do I activate two-factor authentication?".
If the login to the Control Panel no longer works due to the missing two-factor authentication, you can have an SMS code sent to you in order to login.
Read more about this topic in the article: I don’t have my mobile phone on me, what do I do now?
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For support requests please use this form instead.