May I know the model number of your smart plugs? if you press the power button on the plug itself, can it turn on/off the lamp connected？ Besides, does the lamp have its own power button? When trying Livechat, please click on "Talk to Agent" to troubleshoot on this issue, if we are unable to fix it and confirm it is still under warranty, the seller or TP-Link will help you to replace the defective product upon checking the proof of purchase. Thanks a lot for your cooperation! Have a nice day!