Hi @Roselyn Marzan ,
From the screenshot It appears the MFA is looking for you to enter the OTP code from the account in the authenticator app.
If you want the push notification you should choose this option.
If the account is no longer on the app or not working after trying these steps you should try require re-register multifactor authentication on your account in your tenant.
I hope this helps to resolve your query. Please "Accept the answer" if the information helped you. This will help us and others in the community as well.