Android cannot resolve host address

[Waterwater10 2]

I have "block connections without VPN" turned on. Whenever I switch from Wifi to 4g, it fails and says

 

cannot resolve host address: europe.vpn.airdns.org(no address associated with hostname)

 

I have to disable always connected vpn in order for it to connect, and then I can re-enabe it.

 

It never has an issue switching from moble to wifi though.

[corrado 100]

Which app do you use?

[Waterwater10 2]

Which app do you use?

I use "OpenVPN for Android", but I have tried "OpenVPN Connect" and that has the same issue.