Private DNS stops access to Vodafone app

[Toweliechaos]

I started using private dns on my Android device and as soon as I did, the Vodafone app stops working, that is to say that it opens but says it cannot make a connection to the router. 

Is there a way round this so I don't have to keep turning private dns on and off? 

[Cynric]

@Toweliechaos Can you reach the router using a browser to the address https://192.168.1.1/ at all?

[Toweliechaos]

Yes, that's fine. It's the Vodafone app that controls all the WiFi and pro stuff that fails to connect when private dns is on. 

[Cynric]

@Toweliechaos OK, thanks. I was going to go through some steps, but @CrimsonLiar has got the answer and saved us time.

[CrimsonLiar · Accepted solution]

Using Private DNS on an Android device, if you have the setting on "Auto" it should be private whenever it can be, only falling back when it needs to,  *The vodafone app doesn't work for me either with "Private DNS" set to a DNS hostname!  And some of these settings just feed off the feeling of insecurity rather than offer any additional real security!

[Toweliechaos]

Thanks for that! I wondered what the auto did. Now I know!