From your debug log, Pi-Hole is processing a lot of queries, likely more than generated by the Pi itself. Typically when we see 2 clients, one is the Pi and the other might be the router.
[2020-01-26 17:59:36.824 1262] Imported 33395 queries from the long-term database
[2020-01-26 17:59:36.825 1262] -> Total DNS queries: 33395
[2020-01-26 17:59:36.825 1262] -> Cached DNS queries: 218
[2020-01-26 17:59:36.825 1262] -> Forwarded DNS queries: 33023
[2020-01-26 17:59:36.825 1262] -> Exactly blocked DNS queries: 154
[2020-01-26 17:59:36.825 1262] -> Unknown DNS queries: 0
[2020-01-26 17:59:36.825 1262] -> Unique domains: 445
[2020-01-26 17:59:36.825 1262] -> Unique clients: 2
[2020-01-26 17:59:36.825 1262] -> Known forward destinations: 2
Let's check who is using Pi-Hole. Please post the output of this command from the Pi terminal:
echo ">top-clients" | nc localhost 4711
Next, we check from a network client to see which DNS it is using. From one of the network clients running Windows, Linux or MacOS, run these commands directly from the command prompt or terminal on that client and post the output:
Perhaps I don't fully understand the problem you are seeing. "Clients cannot resolve any hosts".
The debug log shows that the Pi-Hole received more than 33K queries in 24 hours, most of them from the router. The router is the DHCP server in your setup, and almost all the queries are shown as coming from the router. The router isn't making all those DNS requests - what you are likely seeing is the queries from all the connected clients appearing to come from the router.
Please clarify the problem you are experiencing and why Pi-Hole only works on the Pi you installed it on.
Also, please post the outputs of these commands from the Pi terminal:
If I change Local DNS to 192.168.17.101, nothing resolves and I can’t surf the web or do anything.
If I change the Static DNS 1 to 192.168.17.101, nothing resolves and I can’t surf the web or do anything.
Currently, the top clients are not incrementing any longer either as I am not surfing on the Pihole device and nothing else seems to know it exists since if I put the .101 IP in for DNS, nothing resolves.
Where should I have the .101 set? For the Static DNS 1 and/or the Local DNS for my Router?
I removed Forced DNS Redirection and added .101 as the Static DNS. Some resolve VERY SLOWLY and others still fail. It appears nearly all are attributed to the Router as you can see the count increments.
In this forum, it works best to copy and paste text output into a reply. Your screen shots are small and difficult to read. You also don't want to blank out the server - that's a part of the output we need to see.
It must have worked at one time, since there was quite a bit of DNS traffic going to the Pi-Hole. Something must have changed between then and now.
You may have to experiment a bit, but it looks like in both places. Have you read the manual for this router and firmware?
When you had the router pointed at the Pi-Hole DNS, did you reboot the router and renew the DHCP leases on all the connected clients? If you don't get them a fresh lease, they won't get the new DNS information.