Got notified my auto-download scripts for retrieving data from PWs stopped working. Sure enough my browser window connected to the local GW IP showed no connection (hard-wired ethernet) and the 3 PWs were all fast flashing (pulsing) green. App doesn't seem to connect either. Tesla's troubleshooting guide indicated to check Internet connection which wasn't the issue. Was about to try resetting GW when several minutes later browser connection comes back stating "Updating devices...", and the app appears to be ok with no indication an update is taking place. Took about 10-15 minutes for the Updating devices... message to be replaced with Connected to Tesla. Anyway, documenting here in case anyone else runs into it.