Setting up an reversy proxy for netdata dashboard

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Problem/Question

I have tried to setup and simple authentication for hosted netdata dashboard, i tried ngnix and h20 documentation in the learn.netdata.cloud/docs. Even after creating this, i can still load the dashboard with authentication, any idea how to fix this.
Even the logs looks clean but i cant setup simple authentication.

Relevant docs you followed/actions you took to solve the issue

Followed all the steps in this. learn.netdata.cloud/docs

Environment/Browser/Agent’s version etc

Ubuntu 20.04, netdata v1.47.2,nginx/1.18.0 (Ubuntu), h2o version 2.2.5