
Just to add my thruppence to the discussion of what works and doesn't - I just plugged in a Konnwei OBDII (KW902) to my Honda e - and like fellow user stzrd, Car Scanner detects and connects to it, but can't connect to the ECU.
As hinted at above, I assume that it's a Honda-related issue, as this plugs into my partner's Renault Zoe (using the CanZE app) and connects to the ECU instantly.