Apple’s Private Relay

Hello everyone! 
I'm French, so please excuse me for any translation problems. 
I have an iPhone on which I installed the nextdns configuration profile and everything works fine. However, when I activate Apple's private relay, it seems that the iPhone can no longer connect to the Internet (Wifi or Cellular). I've whitelisted the logs when I activate the private relay but it doesn't work... 
Thanks for your help