Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello, christina mossige
Thank you for your post in the Microsoft community.
I understand that you've run into issues logging into your work account, and I understand how you feel.
You mentioned that you got a new device. It's possible that the authenticator on your old device is blocking the authenticator on your new device.
You can try the following steps:
For more information, see Microsoft Authenticator Giving "Your screen lock has changed" after - Microsoft Community
Since the issue is related to Microsoft Authenticator, if you need further assistance, I sincerely recommend you post on Microsoft Learn.
More users are posting these problems there and there are experts out there who may offer more professional solutions.
Here's the link: Microsoft Authenticator - Microsoft Q&A. (Please note that the website is English.)
You can click on "Ask a question".
I sincerely hope that your application will be processed appropriately once you have contacted the right department. Thank you for your understanding and cooperation.
Warmest regards,
Lucia Wu - MSFT | Microsoft Community Support Specialist