I am having the same issue with FTL 4.0 being offline line. Adddionally I have run pihole -d to debug and I do recieve output via the cli and via pihole web, but after each attempt I do not get a token only “use netcat” ad the log in /var/log/ is empty. The time stamp does seem to update after each run. But it is not updated which leads me to believe there is a perms issue. The debug long indicated after Pi-Hole log that “cat write error” . I can gladly upload the file I created from a copy and paste by unfortunately I do not have a token. Please advise. PLease note like others my pie hole status states DNS service is running and Pihole blocking is enabled. How ever pihole FTL status reads {1868} :dnsmasq failed to create listening socket for port 53 :persmission denied. Also not i have been through number pihole -r iterations. Also note I have statically set my eth0 int in the /etc/network.interfaces.d . Your assistance is greatly appreciated.