Hi there @JackieZhang , IF you have enabled MFA in PDI then there is no way you can revert it, ServiceNow has stopped providing support regarding the PDI's. You will have to request a new PDI.
Just to retrieve your progress capture everything in update set and import that in the new PDI. That is all you can do now.
If this answer helps you make sure to accept it as solution and give a thumbs up, it will help me and others as well.
Regards,
Saurabh V.
