Both of your debug logs indicate you do not have public IPv6 connectivity.
However, your older debug log showed your router to distribute its own IPv4 address as DNS server alongside Pi-hole:
*** [ DIAGNOSING ]: Discovering active DHCP servers (takes 10 seconds)
Scanning all your interfaces for DHCP servers
* Received 304 bytes from eth0:192.168.111.1
Offered IP address: 192.168.111.2
Server IP address: 192.168.111.1
DHCP options:
Message type: DHCPOFFER (2)
lease-time: 86400 ( 1d )
dns-server: 192.168.111.2
dns-server: 192.168.111.1
Your recent debug log shows that your router currently distributes only Pi-hole.
Assuming you've changed that only recently, clients that yet wouldn't have renewed their DHCP lease could still use your router for DNS and thus by-pass Pi-hole (your current lease time is set to one day).