KYC Of A New Employee - Digital Signatory Does Not Appear

Hi,
I am trying to approve the KYC of a new employee in the new unified portal of EPFO. I go to Member > Approvals and click on the Approve button and have the digital signature (DSC token) available and connected. Popup appeared as "Approve Activity" after waiting for 1 min the Popup is opened as "Signature PDF" in which digital signatory is not appeared.
I have visited EPF office and updated with JAVA version and Mozilla version as per the requirement. still i am facing the same problem. EPF persons are stating that the problem is with DSC but while checking with "OTCP" DSC is recognized and signatory details are visible.
Please find the attachment in regard to the snap shot the problem which i am facing.
Kindly help me out in sorting the issue please.

While approving KYC in new "epfunifiedportal", it is not possible to approve with Digital Signature. It show the following message (in attachment) . What shall I do to approve KYC Using DSC. What are the parameters and platforms to make Digital Signature in EPF Unified Portal?. Please help me.. any valuable information? my email is 'dasjkpl at gmail dot com'