Pihole not working correctly on mobile devices after ISP change

[deHakkelaar]

@gasto

So, nothing to do then I imagine unless I get my own router and ditch this one...

If you read that linked thread I posted above, you have the option to disable the DHCP service on the router and replace it with Pi-hole's own DHCP service.

EDIT:

How do I use Pi-hole's built in DHCP server (and why would I want to)?

Using Your Existing Router For Network-wide Ad Blocking You might not need to use Pi-hole's DHCP server: In many home environments, your router also functions as your DHCP server. In this case, you can often set Pi-hole to be the DNS server for your network clients in the router's DHCP (or LAN) settings page, which allows all of your network clients to block ads simply by connecting to the network. Setting it up this way is also what makes Pi-hole very powerful for network-wide ad blocking. …