Disconnection issues

Is it possible to have a solution or guide line of troubleshooting? I pay for a service choosing nextDNS for specific features like web filtering. So I have a DNS provider which lag and block traffic. Every day, more or less, I am expiriencing disconnection and DNS probe for a couple of minutes up to ten minutes. I tried to disable all Security configuration switch. No specific event logged which represents specific blocks. I have no idea why I am expiriencing these events...obviously I have implemented parental control configuration. I want to block specific matters like Gambling, porn and social media. But I can not esperienced specific block about social or Porn or Gambling related of these blocks. Great frustration...