Block Ads in Apps on Android

Great idea but what if you want to use a separate VPN service which is disabled by this app? Does this VPN just cover DNS or does it secure all traffic? When on public wifi, I want to have PIA VPN enabled.

Does this secure all DNS traffic like Cloudflare 1.1.1.1 app? If it does, I may use it with the exception of public wifi.

Near as I can tell, there's no way to run an actual VPN alongside something like this. I've been wanting to figure something out myself. Thinking more and more that I just want to set up a DNS tunnel to my home network and set up a PiHole there for similar functionality.