Acrobat e-sign Authentication failed
Hi all,
Hope anyone could help me to resolve my Acrobat request e-sign Authentication failed issue.
I do have the Enterprise licenses for Acrobat Pro with other service included Acrobat Sign. After I selected the document, request e-sign, enter the email address and click on button "Specify where to sign" it shows Authentication failed.

Already tried below from Adobe admin account
- Unassign and assign back the Acrobat Pro license to user account
- Delete user account from admin and recreate the account
I also checked Acrobat software is running the latest version and ran repair but it still doen't help...
Would anyone can help? Thanks.
