Login to your OpenWRT router user interface.
You might be prompted to enter your router's credentials if you had not logged in to the router prior to this.
Navigate to Network.
Go to Interfaces > LAN.
Under General Setup, click on the minus (-) icon on the Use custom DNS addresses.
Scroll down and click on Save & Apply.
If you have any problems, please email us at support@simpletelly.com , and try to include any errors and a full description of the fault.
We'll get back to you as soon as possible to assist you.