Cannot connect to adguard home dns server

Now only my main Asus router cannot access to Internet after put the dns server into asus router, it shown red light in the Internet light, other mobile device already can connect to it.

The Mt-1300 already update by manually to latest version do port forward from wan to this beryl at this beryl’s luci web panel already.

How to solve the problem for my main asus router?

Replied your message and hope you have set up correctly.

But I still cannot solve the problem.