I have identified a problem with this smart plug, when using it for switching on/off a PC .
The plug is correctly configured and the KASA application works OK.
After several days of as-intended-functioning the smart plug stopped switching on/off the PC.
Kasa application still controls the on/off LED indicator on the plug, I can hear the relay action inside the plug, but the power supply will not go on/off and I cannot control switching the PC remotely.
I have noticed that the relay sound is much quieter compared to the one when the plug works properly.
I can make the plug work correctly again by unplugging it from the extension lead for 1 second.
I have not seen this strange behaviour when the plug controls purely resistive load ( a lamp ).
I wonder if the PC's PSU makes the plug's action unstable, however I believe (based on the sound and dissasembly photos) there is a regular electromagnetic OMRON G5RL relay, that should not be affected by the magic of a resistive/inductive load imbalance...