I have an AppleAirport Time Capsule that I had pointed to my RaspberryPi/PiHole that worked for years and suddenly it stopped working. Presently, I have my router pointed to it's default DNS because when I point it to 10.0.1.45 (RaspberryPi/PiHole) I lose internet connection. Thanks for any help. I'm not great at networking and it initially took me awhile to get this set up over a year ago so I'm somewhat relearning again.
Just added some photos...I'm not sure what's most relevant to add? Anecdotally, I noticed that PiHole is blocking some domains shown in the attached photos locally on the RaspberryPi.