Not able to connect to 1.1.1.1 dns

I have changed my both dns settings in router,chrome,android & windows to use 1.1.1.1 dns as regular dns,DoH or DoT but when I go to 1.1.1.1/help I am unable to connect to 1.1.1.1,DoT or DoH. If I configure chrome to use cloudflare DoH in windows I can only load 1.1.1.1/help website which shows not connected in every category any other website does not load until I configure chrome to not use DoH in windows.I have included the android screenshots & debug url for details can you please tell me how to solve this issue.

https://1.1.1.1/help#eyJpc0NmIjoiTm8iLCJpc0RvdCI6Ik5vIiwiaXNEb2giOiJObyIsInJlc29sdmVySXAtMS4xLjEuMSI6IlllcyIsInJlc29sdmVySXAtMS4wLjAuMSI6IlllcyIsInJlc29sdmVySXAtMjYwNjo0NzAwOjQ3MDA6OjExMTEiOiJObyIsInJlc29sdmVySXAtMjYwNjo0NzAwOjQ3MDA6OjEwMDEiOiJObyIsImRhdGFjZW50ZXJMb2NhdGlvbiI6IklTQiIsImlzV2FycCI6Ik5vIiwiaXNwTmFtZSI6IkNsb3VkZmxhcmUiLCJpc3BBc24iOiIxMzMzNSJ9