PiHole only showing some client names

Hi all,
I just configured a fresh PiHole and use PiHole running as DHCP.
This is because I do not seem to be able to let NETGEAR ORBI run as DHCP with PiHole.
Everything if working so far, ads are being blocked, however, only a third of my devices have proper client names. the other ones are either the IP or unkown.
Is there a way to change that? I tried editing the hosts list but it did not change anything on PiHoles end.

Thanks a lot for your help!

Please upload a debug log and post just the token URL that is generated after the log is uploaded by running the following command from the Pi-hole host terminal:

pihole -d

or do it through the Web interface:

Tools > Generate Debug Log

attached is the debug. thanks a lot for your help!

https://tricorder.pi-hole.net/7aeEEDYo/

You have 2 DHCP servers running on your network, offering different DNS servers to clients.

*** [ DIAGNOSING ]: Discovering active DHCP servers (takes 10 seconds)
   Scanning all your interfaces for DHCP servers
   Timeout: 10 seconds
   
   * Received 300 bytes from eth0:192.168.0.1
     Offered IP address: 192.168.0.21
     Server IP address: N/A
     Relay-agent IP address: N/A
     BOOTP server: (empty)
     BOOTP file: (empty)
     DHCP options:
      Message type: DHCPOFFER (2)
      server-identifier: 192.168.0.1
      lease-time: 86400 ( 1d )
      netmask: 255.255.255.0
      router: 192.168.0.1
      dns-server: 192.168.0.1
      --- end of options ---
   
   
   * Received 300 bytes from eth0:192.168.0.18
     Offered IP address: 192.168.0.102
     Server IP address: 192.168.0.18
     Relay-agent IP address: N/A
     BOOTP server: (empty)
     BOOTP file: (empty)
     DHCP options:
      Message type: DHCPOFFER (2)
      server-identifier: 192.168.0.18
      lease-time: 86400 ( 1d )
      renewal-time: 43200 ( 12h )
      rebinding-time: 75600 ( 21h )
      netmask: 255.255.255.0
      broadcast: 192.168.0.255
      dns-server: 192.168.0.18
      domain-name: "lan"
      router: 192.168.0.1
      --- end of options ---
   
   DHCP packets received on interface eth0: 2

Turn off the router DHCP if you intend to use Pi-hole for DHCP.

I did that now. Sorry for the oversight.

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

After you renew the DHCP lease on all network clients, they should all be using Pi-hole for DHCP and Pi-hole should be able to identify clients by IP.

If you don't renew leases, then the problem should resolve in a day as all the existing leases naturally expire and are renewed:

      lease-time: 86400 ( 1d )
      renewal-time: 43200 ( 12h )
      rebinding-time: 75600 ( 21h )

thanks a lot for the note and sorry for the late reply. I fixed the double DHCP and set up everything accordingly, flushed the client list and set my lease to renew every hour to get old ips removed, however there still are some IPs showing up as unknown.
I added another debug file in case anything looks off. thanks again for your help!

https://tricorder.pi-hole.net/2nBEUwFc/