OK,
I tested on my computer at home, a different machine and it worked fine. It looks like it just does not work on some computers, not sure why. Also I’m not sure what else to do to get it for my company working. I just uninstalled Kantu from my browser and reinstalled it.
Still same issue as I’m sure some other users have the same.
I guess I’m giving up here.
Here is the same issue reported by someone else: