I installed using the Pi DNS, choosing my WiFi connection under the change adapter option; I entered the Pi address as the preferred server. I did it this way because my router is a Plusnet Hub One, that does not allow me to change the DNS settings (like my previous BT one did).
After doing this it blocked ads on everything, and did the main job of blocking ads on You tube accessed via my Roku. However, I can't access any internet sites as it has blocked all of them.
My primary reason for using Pi is to block ads on you tube via Roku, so would be really grateful for any advice on how to do that. I am not tech savvy, so would also appreciate any step by step instructions in any responses.
If what I'm attempting to do is not possible, then knowing that would also be helpful.
I am not a pi-hole wizard. I don't think it has a way to block based on client IP, but it sounds like you have something misconfigured.
I have found that it is easier to use the DHCP server on the pi-hole than to try and tame the DHCP server on some routers.
To do that, set up the pi-hole and router as follows.
Go into your current router and find where the DHCP server is specified and turn that service off.
Go into the pi-hole web interface and log on. Go under settings and at the top of the screen click on DHCP.
Give the DHCP server a range of addresses that will not run into anything static you have (which on a simple network will be the pi-hole and the gateway)
Put in the gateway address (this will be the same as the ip address of your router)
(Optional) extend the lease time for the DHCP leases. I go with 744 hours or one month).
Now you need to go into any devices you have modified the IP configuration on and tell them to get all of their settings from DHCP. We want everything, including the DNS server address from DHCP.
Your best bet after changing all the changes are to reboot each device to make sure it acts on the changes. You should see the list of DHCP clients start to grow under the DHCP tab on the pi-hole.
At this point in time everything should work. You may have to tune your block lists, but that is normal.