I just installed a new Netgear N300 (EX2700), this is what I found. . .
While installing I was prompted to update the firmware, which I, of course, did. Upon completion I could not control devices connected to the extender. Even tho I assigned the device to a test profile (which has no access) the device could still access the internet. Not good.
After much reading and head shaking and hair pulling, I decided to reset the thing to factory and start all over. This time I did not update the firmware (which I don’t feel good about) and it works as you describe. When a device connects to the ext network it shows as a new device with a somewhat different mac address than when it’s connected directly to the Koala. Once I assign that mac address to the correct profile, all is as it should be.
So, the fault may lie in the firmware update. I’m a little nervous about leaving it outdated, but . . . what can ya do?
I do hope that at some point Koalasafe will make this easier, more compatible. Maybe come out with your own extender?