domain name system – Smart DNS doesn’t work for windows 10

I have purchased a VPN service and I have setup my router to use PPTP and it works for all devices connected to the router.

I also tried to configure the DNS by using the provided Smart DNS. This time all the devices that is connected is working except my Windows 10 laptop.

This laptop (HP Elitebook) connects to internet only without the Smart DNS setup done on the router.

Is there any setup that I can do to fix this issue?