They may be using something like Sift for security checking and something of yours was flagged. Source: over 1 year ago

But sorry to break it to you, this has been done at a really large scale already although most consumers are not aware. One big player here is https://sift.com/ Almost every major retailer uses their service exactly for the reasons you mention. Source: almost 3 years ago

Reddit, for one. A pretty big list on their homepage. Source: almost 3 years ago

If you know any DoH server not currently listed in the app (the most up-to-date list is here), feel free to either let me know I could add them or send a PR directly to OpenWrt Luci repo if you're comfortable doing that. Source: over 2 years ago

Powered by LuCI openwrt-19.07 branch (git-21.189.23240-7b931da) / OpenWrt 19.07.8 r11364-ef56c85848. Source: over 2 years ago

I do apologize I’m very new to OpenWRT. I do run tomato on my home router, but I’m attempting to help a friend get his business networked properly. The existing equipment runs OpenWRT but not a single soul here knows the admin login. I’m hesitant to reset it and try to start from scratch for a couple reasons. I’m still doing my own research and familiarizing myself with OpenWRT but I was hoping to get at least one... Source: over 2 years ago

I decided to swap out the router with an upgraded Archer C2 AC750 with OpenWRT. ( LuCI openwrt-19.07 ). Source: about 3 years ago