Sorry, I was confused with the model name too. I got the SF30 Pro (non +). It seems to be technically the same as SN30 Pro (non +).
Anyway, as mentioned before, I got problem the controller pairs but is not working at all - not even in ES/menu. I'm on latest firmware 1.34. Further not tried too much changing controller mode. It worked fine in "Switch mode" with Recalbox 7.1.1 and before.
Further one nice feature is, the controller switches off automatically when shutting down Recalbox when in "Switch mode", so I won't try again other modes at all as far as it might not necessary. In worst case I will restore my backup of Recalbox 7.1.1.
Anyway, thanks to developers for new version and the hard work!