The crux of the issue is that there are probably 50 “generic” zwave switches of the more than 1300 devices in the OH Zwave DB. Each “generic” has a unique set of identifier’s (TYPE:ID), so no one can help you until we know what those are (i.e. there are no generic switches).
The usual reason for the no channels shown is the device is not in the DB. Normally for powered device the device gives up those numbers quickly. Since that information has not been provided the assumption is that your system is not working normally, hence the suggestions. If you have five lines on the device UI page
and an XML in the var/lib/openhab/zwave folder for that node please provide that information. It is needed for you to add the device to the community-maintained DB. If not, something is wrong on your end.
Also since it has been a few years since your last post you might want to review the how to ask a good question post.