Olympus Micro not showing in Halion Sonic SE

I have installed Olympus Micro three times now and it still does not show in Halion Sonic SE. I have double clicked on ‘Soundiron_Olympus_Micro.vstsound’ and that clicks through to Steinberg Library Manager and tells me no action has been taken as the vst is already registered. I have run maintenance in eLicenser which kindly upgraded my Cubase license to Artist 11. No sign of Olympus though. I have followed all the instructions in YouTube videos and recommendations in a post from last year on this subject. Can anyone help me?

I had similar symptoms, and just realized that my eLicense was off: it still showed Dorico SE rather than Elements 3.5 which I had just installed. For some reason Dorico wasn’t complaining.