How to Setup SmartDNS on Asus Router

Find your router's IP. Follow this guide for more information on how to get it.
Open your web browser and enter your router's IP in the address bar.
Login into the router - use admin/admin if you have not changed the password or username before.
On the left-hand side, scroll down to WAN and click it.
Scroll down to WAN DNS Setting.
Select No for Connect to DNS Server automatically.
Under DNS Server1 input: 212.32.240.145
Under DNS Server2 input: 104.200.137.81
Scroll down and click Apply.

Important

The first step of troubleshooting should always be to restart the device(s) and router. Then check your setup status in your SmartDNS dashboard.