在應用程式或瀏覽器中切換多個 Teams 免費版帳戶
Hello Raymond! My name is Janbaz, and I am an Independent Advisor as well as a long-time Microsoft user.
I'm sorry that you are experiencing this issue, and I am hopeful that I will be able to help you find a satisfactory solution.
Dear Raymond, Please check the below article related to your issue:
Common problems with two-step verification for a work or school account
Try waiting a bit longer. Some carriers process requests more slowly than others.
If you still don’t get the code, use a different security contact method that’s associated with your account to get the code.
I would also suggest you to check the Troubleshooting verification code issues in the link
Microsoft account security info & verification codes
https://support.microsoft.com/en-us/account-bil...
If none of them is helpful you can try contacting the Support to get the code https://support.microsoft.com/contactus
Please let me know if this doesn't work or if you need further assistance.
Warm Regards,
Janbaz