Orbi RBR20 static route issue

Yes sorry I'm using device address reservation not static IP, and the devices aren't changing their respective mac address or IP address. So I asked this question to AI and explained what is happening and got the message below showing it is a known firmware bug.

On the Orbi RBR20, Netgear's Access Control firmware functions by actively tracking the connection states of recognized devices. When a device drops offline for a week or two, a glitch in the background code causes the router to handle its state incorrectly:

1. The State Desync: When your device went offline for two weeks, the router marked its profile as "offline." However, the firmware failed to properly retain its original "Allowed" state flag in the offline cache.

2. The "New Device" Trigger: When the device woke up after a couple of weeks, it requested its reserved IP address from the DHCP server. Because the Access Control backend code had corrupted its historical profile status, the firewall processed the incoming connection as a brand-new, unknown device.

3. The Automatic Lockout: Because your Access Control is configured with the strict global rule to "Block all new devices from connecting," the Orbi automatically applied a block to the device's MAC address—overriding your active IP reservation list.

This confirms your original suspicion: it is absolutely a firmware bug. The router should look at your permanent IP address reservation and remember the MAC address, but the Access Control sub-system loses track of the device's validation state during prolonged inactivity.