DNS changer apps not working

[Dazbear]

Trying to use DNS changer apps on my Android device (Cortex A53 chip) running 6.0.1 but none work.

They all say they are active but ipconfig confirms no change in DNS. No key appears on top bar either.

I have another box and the apps work great.

I've changed manually but ran into issues.

Any ideas?

 

[ManiacJoe]

Which device?
Which DNS app?

 

[Dazbear]

It just a box from Amazon...running on a Cortex A53 chip. I've tried using a few of the DNS changer apps that say no root required...but no joy.