No Internet if I Disable DHCP On Router / Blocked Queries 0

[Paft]

(First-time Pi-Hole user)

I have set up Pi-Hole via an old Android Moto G 1st gen via:
https://github.com/DesktopECHO/Pi-hole-for-Android

Manually setting each device to the Pi-hole's DNS seems to be working as far as I can see so far. But even as a home user with only a few devices, I'd still rather it be done automatically.

IPS:
BT (with their own router: BT Hub 6A)
which doesn't allow DNS changes.

Home user with a dynamic ISP IP

I've tried using Pi-Hole's DHCP and disabling it on my IPS' Router, but it seems that when I reboot the router or devices try connecting to it again they can't or have no internet.

TL;DR:
I believe I have the same or similar issue as this user:
https://discourse.pi-hole.net/t/disabling-dhcp-on-my-router-causes-no-internet-connection/25013

I followed the advice, but adblocking doesn't seem to work. There are green 'Permitted DNS Queries' but 0 'Blocked DNS Queries'.

Debug Token:

https://tricorder.pi-hole.net/lEB1N9yq/

[Paft]

I have changed my IP addresses to be less confusing for myself, but still no joy.

*Router:
IP Address: 192.168.0.1
DHCP: Enabled
Authoritative DHCP: On
Server address range: Custom
Start address: 192.168.0.2
End address: 192.168.0.2

*Pi-Hole:
IP: 192.168.0.2
Upstream DNS Servers: Google IPv4. Check/Check
DHCP server enabled
Range of IP addresses to hand out: 192.168.0.3 - 192.168.0.100

For example, my PC IP is now: 192.168.0.4. Ads still come through. They only get blocked if I manually add the 192.168.0.2 DNS on each device...

Updated debug Token: https://tricorder.pi-hole.net/jjCWP0qW/

[Apologies if this is classed an impatient bump/spam.]

Edit: I've noticed these since:
Pi-hole diagnosis:

|2022-01-13 01:09:36|DNSMASQ_WARN|Warning in dnsmasq core:

no address range available for DHCP request via lo

|2022-01-13 01:09:36|DNSMASQ_WARN|Warning in dnsmasq core:

DHCP packet received on p2p0 which has no address|
| --- | --- |