I hate to add to your headache, but multiple pihole ad blacklists contain your domain. It looks like https://winhelp2002.mvps.org/ may be the original source of the blacklisting.
Yeah but it means their service is less valuable. If adblockers block traffic to that domain then there's less incentive to pay for the service because an undetermined but ever growing percentage of traffic will block it.
cat /etc/hosts |grep -i 'jsonip.com'