Many devices can’t connect to Nighthawk MR60 after power outage

[Pgarding]

My system has a router and three satellites. Our power flickered off and in several times, and now most (but not all) devices cannot connect to WiFi. I have rebooted the router and devices several times, but I have not done a factory reset on router yet. Devices that DO connect: Windows laptop (on 5GHz network), one iPhone 11. Devices that DO NOT connect: two iPhone 11s, all Alexa devices, Ring doorbell, two iPads. On the iPhones that don’t connect, I select the network name and it shows a spinning “connecting” circle forever. I recognize that most of the unconnecting devices are 2GHz devices. I’m wondering if the power outage fried the 2.4 GHz logic somehow. Any suggestions?

[plemans]

Try reinstalling the firmware to it and then doing a factory reset. If the power flickered corrupted something in the firmware, a reinstall of firmware and reset could clear it out.