There are some Samba shares that openHABian sets up. You can also ssh in and access whatever you’d like. The openHABian docs go over this.
That’s the thing… you have the latest that is in the distro, but there is a more recent version, and it definitely works better for me. Don’t know if it will resolve your issue though. You’d need to uninstall Zigbee, restart OH, and then drop the files into the addons directory. You can download the OH files (org.openhab.binding.zigbee.jar and org.openhab.binding.zigbee.ember.jar) from Cloudbees, but the Zsmartsystems files are here. You’ll need com.zsmartsystems.zigbee and com.zsmartsystems.dongle.ember. The JFrog site is not easy to navigate, so let me know if you have trouble finding them.