Hi, we have had a similar issue. Powerwalls without lights and gateway WiFi not broadcasting. We had no power from GRID or solar but after hours on a tech call with Tesla, they directed checking under the "Do not touch" except if directed by Tesla sticker as to the setting of the GRID/OFF GRID toggle switch and ours was mid-way between so once it was set back to GRID, we got grid power back but no TEG-XXX Wifi so no powerwalls etc. Looks like the BGateway (one) is defective in some way but level two support may take 20 to 25 days before they will schedule a tech service visit!!! That is unacceptable but the gateway is at least allowing us grid power...looks like the WiFi and network board is dead because we have tried reseting and full power off and on several times but no luck. IMHO, Tesla needs to replace the 3G cellular modules to 5g (and backwards compatible) so the gateways are not dependent on the (evidently cheap-o) Wifi boards that are failing in so many gateways.