Comment by harrygeez

I'm Malaysian. They even messed up DoH for the popular DNS providers like Google and Cloudflare. I think they are routing 1.1.1.1 to their own DNS, so when you try to connect to DoH you get SSL_ERR_BAD_CERT_DOMAIN. The only option it seems is to VPN or play the cat and mouse game now to find a DNS that hasn't been rerouted yet