Your debug log already told us that port 53 (as well as other Pi-hole ports) are claimed correctly by Pi-hole, so re-checking port status wasn't required.
You need to check your Pi-hole machine's firewall.
Also, Pi-hole's upstreams wouldn't be involved in resolving mynetworksettings.com
, as Conditional Forwarding would forward respective DNS requests to your router - but it seems you've disabled that in your latest debug log?:
*** [ DIAGNOSING ]: Setup variables
(…)
REV_SERVER=false
REV_SERVER_CIDR=191.168.1.0/24
REV_SERVER_TARGET=191.168.1.1
REV_SERVER_DOMAIN=mynetworksettings.com