As per the cdemu team member rokm pointed out ( Daemon refuses to load, complains of permissions. · Issue #28 · cdemu/cdemu · GitHub , the current openSUSE packages for cdemu are missing udev files that make it impossible to run it because of a permissions issue with vhba.
Is this the proper way to inform of this error?
No, the proper way is to open bug on https://bugzilla.opensuse.org/. Even better way is to fix package and submit pull request.