Aadhar linking to provident fund

My friend is trying to add Aadhar details to his PF account online.

https://unifiedportal-mem.epfindia.gov.in/memberinterface/

However, it says that Verification will be done by the employer.

He does not work with that employer anymore and lives outside India and works outside India.

So is there any other way to link Aadhar number to PF account?