Anoop Kv
Thanks for your feedback.
Could you please create a support ticket?
Regarding to how to create a support case, it is sort of depends on what kind of support contact you have. The most common type you can do is from the O365 Admin Center under Support.
Create a support case via the Office 365 portal: https://portal.office.com/adminportal/home? Select New Service Request from the left menu will be good.
This might help also https://support.microsoft.com/en-us/gp/support-options-for-business?forceorigin=esmc
I think also maybe this can provide support for those who want to avoid spending money
https://support.microsoft.com/en-us/contactus/
At the same time, could you please share everything under C:\Users\%user name%\AppData\Roaming\Microsoft\MigrationTool\admin@XXXX.onmicrosoft.com\WF_XXXXX folder to Migration dev servicing migration_team@microsoft.com? It will include reports and logs.