Pi Hole stops working

Clients will need to renew their IP address/lease first to receive the new DNS server (PI-Hole) as a resolver.
This can be done by bringing down the network interface and up again,
or disconnecting the wire,
or rebooting.

Below link is a good test for the devices:

http://pi.hole/admin/

If it doesnt show the admin page, its not using Pi-Hole to resolve names to IP addresses.

It might be that your router deals out different IP details to the two channels.
Most PC's and Pads will show you their network details via some tool or in the settings.
Even a windows PC will show you from who it received the IP details via DHCP:

C:\> ipconfig /all
Windows IP Configuration
   DHCP Enabled. . . . . . . . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 10.0.0.11(Preferred)
   Lease Obtained. . . . . . . . . . : vrijdag 5 mei 2017 0:20:56
   Lease Expires . . . . . . . . . . : zaterdag 6 mei 2017 0:20:55
   DHCP Server . . . . . . . . . . . : 10.0.0.8
   DNS Servers . . . . . . . . . . . : 10.0.0.8

Some routers don't let you set the DNS server via DHCP, but we do have a generic FAQ that may help:

Also, you can disable your router's DHCP server and use Pi-hole's built in one if all else fails.

Ohw man your so too late :wink:

Alrighty...back with a fresh cup of coffee!

Unfortunately ad blocking is still pretty spotty. Works on my wife and my iPhones if we are on the 2.4G channel, not the 5G channel. I have my laptop hooked up to my 2.4G channel as well as the 5G channel and it isn't blocking anything on either. I unplugged the Pi Hole ethernet cord and plugged it back in, as well as reset my laptop and ran ipconfig /release and ipconfig /renew but neither solved this problem.

What next?