First off, for both the WXKG02LM / WXKG03LM Aqara Smart Switches, you need to use the correct custom device handler that I made, which is here.
Also, there are two revisions of the WXKG02LM / WXKG03LM smart switches, a 2016 revision which only supports single-press functionality, and a 2018 revision that supports single- and double-press, and hold.
See this post for more information: (make sure to scroll down to the header " [RELEASE] Aqara Wireless Smart Light Switch DTH v0.9.2")
Also, see this post with information on how to identify the revision of your WXKG02LM / WXKG03LM smart switches:
Let me know if you have any other questions after you’ve got the correct device handler installed.