Bypassing NextDNS

Hi, I have an issue where if I can from my side modify inside NextDNS App Configuration ID or Disable I can bypass dns. Which i want to somehow lock from accessing and changing easily. I use Plucky which helps a lot but for this instance its useless. Since I have an addiction I need to have no choice of changing settings for some delay at least. My current Plucky delay is 40 minutes. Thanks for helping out. My router is Zyxel VMG8623-T50B if it may help.