Hi,
Activate the UAN by visiting epfomember portal. The member will be receiving an OTP in their prescribed mobile number given. Once the UAN is actiavted you can select modify basic details and can change the member's name as that of in his Aadhaar card. Once the name change request is submitted from the member portal, it should be approved by the employer through Digital Signatory, later on by the PF field office.