Hi,
It depends how you configure the points system.
If you configure it to be added as a coupon to the orders, then it will work for points too.
If you don't and the points are added as "additionals" to the orders (which is what you want in most cases), then there is no setting to take them into account.
You would have to change the code:
public function onAfterCartProductsLoad(&$cart) {
}
/**
*
*/
public function onAfterCartShippingLoad(&$cart) {
to:
public function onAfterCartProductsLoad(&$cart) {
in plugins/hikashoppayment/userpoints/userpoints.php