Private DNS not working with some url

Hi Folks,
I try to add a private DNS on my FP3 (e/os) 1.10 and it’s not working on few url.
For instance is not working but is working …
I tested on my wife smartphone it’s working …
Have you any idea why this not working ? maybe the root certificates list ? this open dns is using Let’s Encrypt …

Regain your privacy! Adopt /e/ the unGoogled mobile OS and online servicesphone

try the second one - … that one worked for me in a v1.10-q when didn’t.

Androids dns-over-tls implementation sends out a probing query to to verify DoT works (

That probing dns query doesn’t complete with, when it does on ns1. Certificate chain, pubkey algos etc, they all look identical. Outside of Android I’d have no issue doing the probing querys to ns0 on tls port 853