Dear @Rajitha Fonseka,
Good day! Welcome to Microsoft Q&A forum!
Based on your description, I understand that you’re experiencing difficulty signing in to your business admin account due to an authentication loop. You’re unable to access the Admin Center or your business email because the required verification codes aren’t being delivered to your region, and you no longer have access to the Authenticator app after changing devices. Additionally, based on your previous comment on another post, I understand that you have already created a support ticket for this issue.
I sincerely apologize for the inconvenience caused by this issue.
Regarding this situation, please kindly provide me with the number of your support ticket via Private Message so I could check its progress and update with you there.
Please note that forum moderators have no control over user accounts, especially when it comes to logging in to your account, resetting your password, changing your access, etc.
Please kindly click on the notification bar at the top of this page to view the private message, as shown in the image below.
Kindly let me know when there are updates or if you need further assistance. Any updates you’re able to share would be really helpful.
I'm here and happy to help! Thank you for your kindness and patience!
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