I have never tried it on an Raspberry my self, but have you seen this topic:
They talk about you need to also update the \openhab2-conf\services\addons.cfg file to get it installed.
I have never tried it on an Raspberry my self, but have you seen this topic:
They talk about you need to also update the \openhab2-conf\services\addons.cfg file to get it installed.