Can DGN2200 cope with DNS being sourced from within the LAN?Routers

[danebo]

Whenever I change the DNS from 8.8.8.8 to my Adguard server everything goes down and nothing will resolve anymore. However on a per machine basis if I set the DNS to my Adguard server all is well...

I'm thinking either the DGN2200v4 can't cope with the DNS being handled from within the LAN or there's somewhere else I should be setting the DNS apart from on Setup>Internet setup

it's the same page as I put in my ISP DSL password etc...

[FURRYe38]

Netgear has set up a community forum specifically for the DSL Modem products. Most of the people who watch that forum are more likely to have experience with Cable modems and know how to work it better than those of us who follow this router forum. Might be more likely to find someone who has a solution if the question is posted there:
https://community.netgear.com/t5/DSL-Modems-Routers/bd-p/home-dsl-modems-routers

Please use this link to the main forum product list to review and choose where to make your posts. 
https://community.netgear.com/t5/NETGEAR-Forum/ct-p/en-netgear

Thank you.