My old router died so I bought an Archer AX1500 and got it all setup.  When I try to input the setting to give my Raspberry Pi 4 a reserved IP address, I click Add, then View Connected Devices but the Pi doesn't show up.  I manually entered the MAC address and desired IP address [the one statically set on my Pi during it's setup of the Pi-Hole].

My iMac can ping the Pi, my Pi can ping the router but not my iMac and the Pi can't connect to the internet.

Any ideas?