I have 3 bulbs of type L535E - bought them at the same time. 2 are on: firmware 1.1.8 Build 240708 Rel.165207 (hardware V3.0) 1 offered a firmware update during setup and is on: 1.4.1 Build 251016...

@Wayne-TP - I have the same problem. I have a Tapo P110M smart plug. 1) I added it to the Tapo app, 2) I added it to the Apple Home app, 3) I used the pairing code from the Apple Home app to add it...