Well Homey reports it is offline, but it is connecting to the wifi ok.
The Homey Pro (not latest version) today could no longer be accessed through the iOS app or web app.
It is successfully connecting to UniFi AP with great connection being 3 feet away from the AP.
It is powered with 2.4a usb psu.
I tried it with another 2.0a usb psu
I have powered off, waited a few mins restarted it.
Waited until the leds stopped, waited another 1 minute.
Then turned over the Homey.
It is silent but after a couple mins tells me to open the Homey app.
The Homey app guides me through joining the Homey Wi-Fi
Connects and I have tried two different Wi-Fi networks, then the Homey just hangs.
Checking UniFi the Homey can be seen connecting successfully with both wifis but the Homey App declares inaccessible.
I have been reducing the loading in the Homey as it was struggling, so having moved all zigbee and zwave devices, along with Hue and as many other things I can to get Homey stable.