I have the same issue as Sengled Smart Plug power meter reporting thousands of watts
For example I have one connected to my dryer and the power meter changes from 600W to 1.3kW and the only thing on the dryer that is on is the flashing indicator LED.
It appears to occur on all of my Sengled outlets, not some.
I’m guessing a recent drive change has added a multiplier of 1000?