The issue I am facing:
I set up pihole yesterday and parents do not like that googleadservices and various other ad domains are blocked. I should remove their devices from any rules applied by pihole.
I followed this tutorial but various other guides I found follow basically the same procedure.
Therefore I created a group "Mama und Papa" and put the clients into that group via the client group management tab. All adlists are only applied to the "Default" group so I figured none of the adlists will apply to devices in the "Mama und Papa" group so nothing will be blocked.
After that I restarted the DNS server using "pihole restartdns".
However on one device (my mother's smartphone) everything seems to work fine and I can click on ads shown in Google search. Two other devices (Samsung Galaxy Tab S7) still sometimes show that the DNS address of googleadservices.com could not be found instead of showing the website I was trying to look at. But sometimes it works fine as well. I really do not get it.
The devices have a static IP-address (given by the router, the devices themselves hav DHCP enabled) and a defined hostname.
I tried googling but did not find a solution to my problem.
One thing I observed, I do not know if it's important or part of the problem but the hostnames shown to some IP addresses in the client overview are sometimes wrong.
One device 192.168.178.56 for example hat the hostname Tablet but if I look in my router (Fritz!Box 7590) the device with IP 192.168.178.56 is not a Tablet but a phone or something. Couldn't solve that problem either.
Details about my system:
DHCP: Running on my Fritz!Box 7590 reachable under 192.168.178.1. The router is giving out 192.168.178.8 as DNS server.
Pi-hole: running in a docker container on a old laptop I use as a "server" the laptop is running Debian 11. Reachable under 192.168.178.8. Upstream DNS is Google.
Following are some pictures showing the configuration
Configuration of the DHCP (is in German hopefully still understandable):
The DNS configuration of the Fritz!Box DNS-Server:
My Pi-hole group configuration:
Let me know if you need anything else. I really hope someone can help me - I do not want to remove pihole completely in order to satisfy my parents haha
EDIT 1:
Tried to upload a log file. Did, of course, not work. Put it into pastebin.
EDIT 2:
Got the file on my host and uploaded it from there, here's the token. Removed pastebin link.