MemberPress: Remove a User Role After Subscription to a Specific Membership Expires

add_action('mepr-event-subscription-expired', function($event) {

  $txn = $event->get_data();  // Get the transaction data from the event

  $user = $txn->user();       // Get the user associated with the transaction

  // Check if the expired subscription is for the specific membership

  if ($txn->product_id == '123') {

    $user->remove_role('custom-role');  // Remove the specified role from the user - replace the 'custom-role' with the needed user role name

  }

});