Hi,
I recently switched to Vodafone from TalkTalk. I have the Power Hub. I've been mostly happy, but I cannot change the network-wide DNS to my local AdGuard instance on my home server. I can successfully change the setting in Expert Mode (Under Wi-Fi → DNS & DDNS) but all clients still say the router IP, and the DNS change does not work (my local domains for selfhosted applications do not work). I've tried power cycling all devices, forgetting network etc. No luck. If I manually set the DNS in my client Wi-Fi settings (i.e my MacBook, or PC) then DNS works how I would like it to.
I don't know why it won't work on the router. See attached photo of settings.

Frankly this has been very frustrating. Any advice is appreciated.