Hi Amey,

If I understand correctly, the Membership plan is not applied to new registered users. Am I right?

Maybe these topics will help you to solve your issue as they seem to answer the same concern:

• https://wordpress.org/support/topic/assign-a-membership-level-based-on-a-user-role/
• https://wordpress.org/support/topic/how-to-assign-membership-plan-to-all-bulk-users/

Please note that this issue is related with the use of Paid Memberships Pro, not with the use of your theme. It’s best if you try to reach the plugin authors as they will be more informed and better suited to help you.

To go further, we invite you to post your request on their support forums:
https://www.paidmembershipspro.com/support/

We remain available for all support requests related with the use of your theme.

Best,