After I added the plugin Note Refractor, I noticed that some keys to not work. <,> ? Are all upper case next to _ and shift on the right hand side. Those “upper cases” keys do not work. I do not know if happened because of the plug in which also does not seem to work, so I disabled the Note Refactor plug in.
The keyboard uses the program called Karabiner-elements to adjust it to my iMac 2012.
I notice there are other keyboard issues in Russian. This is a Japanese language keyboard.