Install OpenHab2 on a Synology 109

I will hope you can help me as I’m a bit lost.

I would like to install oh2 on a Synology 109. I have already installed Java 8 (via package) and also openHAB 2.0.003 beta 3. Both services are running. But that is all what is working now. I do not find any log files on my system and I’m not able to start openHAB configuration. Is there a config file I have to create before? Only created folder public/openhab2/conf

Would be great if someone could support.