I have always used the timed access on the Airport Extreme to limit access to devices my family owns. I input the MAC address of all the devices. This all worked fine. Whenever I got a new device, I would have to add the MAC address. However, I just added a second Airport Extreme to "extend," the network. Now, even though "timed access," is still turned on, it lets devices not listed get on the network with password. Is there no way to have timed access truly work with an extended network?