Hey,
our Kasa Thermostats are all working fine in the whole house without adapter. Only in the living room the pin is too short to fully close the valve so it stays on even in summer mode.

The adapter which comes with it does not fit and is a tiny bit to small (the one with 2 screws at both sides). I tried to put some small piece of the pin just inside. It is partially working (valve is now closed) but its sending me an error.

What do you recommend here?

Best regards!