Issue:
Unable to complete MFA during login due to any of the following reasons:
No access to MFA
Changed mobile device
OTP is sent to an older or different number
Old number is no longer in use
Workaround:
If your organization has enabled MFA, contact your admin to follow the steps outlined here to disable and re-enable MFA.
If you are the admin or using a personal plan, reach out to support@zohoaccounts.com for further assistance.