Hey Christian,
That sounds weird. You shouldn’t need to put anything into that folder. Everything (except pre-release builds) can be installed via Paper UI.
Normally that is an obvious sign for the binding not being installed. As your setup overall sounds a bit weird it might be complicated to help. Could you please state your base system, installation method, etc.?
- http://docs.openhab.org/installation/linux.html
- http://docs.openhab.org/installation/openhabian.html
My recommendation would be to make a quick reinstall with openHABian. Takes a few minutes of your time, then you’ll have a working openHAB instance on your fingertips, then you can follow this simple guide: