Hello,
Which Z-Way version do you have? Did you install Z-Way via: wget -q -O - razberry.z-wave.me/install | sudo bash or a specific version wget -q -O - razberry.z-wave.me/install/v2.0.0 | sudo bash? You can also check the version under Z-Way / Management / Info.
Have you cloned the Git repository in the directory automation/userModules. The module directory name must be OpenHABConnector.
Regards
Patrick