How do I change the DNS server on my TP Link?

Change the DNS servers on your TP-LINK router via the DHCP menu. Sign in to your TP-LINK router’s configuration page, usually via the http://192.168.1.1 address but sometimes via http://192.168.0.1. Select Network in the left pane. Select WAN under Network. Select the Use These DNS Servers checkbox. Enter the DNS server you’d like to use.
For More Information Please Refer:
https://www.lifewire.com/how-to-change-dns-servers-on-most-popular-routers-2617995
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