Airport basestation 5th Gen - Disappears from network and must reboot to get it working

Hi all,

I have a 5th Gen Airport Extreme basestation. Two days ago it started acting weirdly and I would like some advice on what to do.

I have fibre optic broadband in my home via a ZTE router.

The airport basestation is used in bridge mode. For 9 months it has been working fine, but two days ago the Wifi Network disappears, even though the light on the front of the base station is green. I connect one of my macs via Ethernet to it. When the wifi network disappears the Airport Basestation cannot be found on Airport Utility on the mac connected to it via Ethernet.

If I unplug the power from the basestation and plug it back it, it reboots and is again discoverable on the network on the Mac connected via ethernet, and the wifi network appears again.

This happens a couple of times a day. Is there a way to run diagnostics on the basestation?

When the wireless network disappears, the light is green, and when I look at the wan port on the back, where it is connected to the ZTE modem, it is also showing a small green light.

Not sure if it has started "dying" and I will need to look for a new wifi setup around the house, but hopefully there is a solution... I like using an airport network around the house.

Thanks in advance for your advice