Hello Voon kangyeong,
Thanks for your post in Microsoft community. Due to our privacy policy, we had removed your personal information.
Based on your post, seems issue is related with Microsoft Authenticator app and for that we have dedicated expert support team which are handling issue related with Microsoft Authenticator app, so for this issue we recommend you to kindly post your query on our expert team via Microsoft Authenticator app forum . They will better assist you for such kind of requirement.
We truly appreciate for your kind understanding and co-operation.
Thanks and regards,
Ankita Vaidya