The early version of the Karabiner Elements only supports single key mapping. Karabiner Elements is the official release developed by Takayama Fumihiko to address the limitations of macOS Sierra. I spent a couple of weeks searching for a solution, and finally, found Karabiner Elements that restores the Hyper Key back to macOS Sierra. The lack of Karabiner support means that I can no longer use the Hyper key to trigger any shortcuts I configured in OS X El Capitan. Karabiner has stopped working on macOS Sierra.
