EX7000 Range Extender Blocking an IP Address

Greetings,

I have a Netgear EX7000 wifi range extender that has worked well for several years. Lately, one of the ip addresses connected to the EX7000 is not reachable when connecting from our main router.

Here's the scenario:

Main wifi router: 192.168.1.1; SSID: Home

Netgear EX7000 range extender: 192.168.1.4; SSID: HomeOffice

Two printers connected to the range extender: 192.168.1.2 and 192.168.1.5

When connected to the HomeOffice access point, I can ping both printers.

When connected to the Home router, I can ping 192.168.1.2 but not 192.168.1.5.

It almost seems like ip addresses greater than the ip address of the range extender cannot be reached, although I know this is not the cause.

No firewall rules since this is an internal network. Inbound and outbound firewall rules sit on a router earlier in the network stack. (I recognize this is irrelevant since the EX7000 range extender doesn't have any firewall capabilities.)

This issue impacts all computers. I tried clearing the arp table on the computers but that didn't fix it.

A reboot of the range extender does fix the issue temporarily, which is odd.

Any thoughts?

Thanks.