Why do my panels show offline in the app but work fine in the Home app?

This exact thing happened to my Canvas set after an update a few months back, and the panels staying lit and responsive in Apple Home was the giveaway. The controller itself was fine. The problem was that the Nanoleaf app had lost its local connection permission and couldn't talk to the controller anymore, even though HomeKit could.

First thing to check is on the phone side, not the light side. If you're on iOS, go into Settings, scroll down to the Nanoleaf app, and look at the Local Network toggle. Updates to either the app or the OS can flip that off or reset it without telling you. Toggle it off and back on, force close the app, and reopen it. That alone fixed it for me once. If that doesn't do it, delete the app and reinstall it. I know that sounds scary, but your layout and scenes are stored on the controller itself, not in the app, so nothing gets wiped. When you reinstall and it finds the controller again, your whole setup should come back exactly as it was. I've done this twice now and never lost a layout.

One more thing worth trying before any of that: check if your phone has a VPN running, even an always-on one you forgot about. The app discovery gets wierd with VPNs in a way HomeKit doesn't, so the lights look offline in one app and fine in the other. Do not delete the device from your account or pull the controller off the wall again. The pairing between the app and the controller is the broken link here, not the pairing between the controller and your network. Re-adding the device from scratch is the one path that actually loses your scenes and layout, so avoid it. And yeah, it's annoying that an app update can silently break its own connection while everything else keeps working. But this one's recoverable without starting over, I promise.

Funny how thier app updates always seem to break something the hardware itself handles fine. Mine did something similar last year where scenes would half load, like two panels out of twelve would just ignore the change till I toggled them manually. A firmware rollback actually sorted it for me, I found the older version through their support chat and it's been stable since. Does anyone know if you can still downgrade with these, or did they lock that out? I'd rather sit on an older build for a few months than be a beta tester for features I didn't ask for.

Following this thread closely because mine did something sort of like it last week, just in reverse. The app shows everything fine but the little button controller on the panel stopped reacting to my hand tapping it. Scenes still change from my phone though, wich confuses me since I thought the tap button was the main brain of the whole thing. I never realized the app and the wall controller could kind of work separately like that. Is that normal, or is mine slowly dying on me?