Struggling with EPFO Portal: Why Isn't My Digital Signature Showing for KYC Approval?

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 I have the digital signature (DSC token) available and connected. A popup appears as "Approve Activity." After waiting for 1 minute, the popup opens as "Signature PDF," in which the digital signatory is not appearing. I have visited the EPF office and updated the JAVA version and Mozilla version as per the requirement. Still, I am facing the same problem. EPF personnel are stating that the problem is with the DSC, but while checking with "OTCP," the DSC is recognized, and signatory details are visible. Please find the attachment regarding the snapshot of the problem I am facing. Kindly help me out in sorting the issue, please.

While approving KYC in the new "EPF Unified Portal," it is not possible to approve with a Digital Signature. It shows the following message (in attachment). What should I do to approve KYC using DSC? What are the parameters and platforms to create a Digital Signature in the EPF Unified Portal? Please help me with any valuable information. My email is 'dasjkpl@gmail.com'.