i think it is the ohme charger which is directly compatible with IO but, I think octopus support the E Niro directly so you should be ok.
last I looked the Ohme does not have solar integration.
I have a zappi and can't knock it (I have solar so the zappi is good... Some other charge points support solar but as I understand it Zappi is still the leading one for combining solar charging). it isn't directly supported by IO but hopefully will be soon. (was meant to be spring but is now autumn)
these guys did mine. I was happy with them.
Elecogy offers much cheaper Myenergi's Zappi EV charger installation, with quicker property surveys. Book for a free site survey now.
www.elecology.com