I don't think there's such a thing as a "Canadian" box or an "EU" box - I suspect the hardware is all the same, and any distinctions are made via your account settings and software (and GPS signal - it knows where it is).
Part of the set-up and registration process for In&Motion, in my case, involved entering a serial number from my RST suit. I tend to suspect the box is tied to the garment and serial number of what you bought it for. I don't know the ins and outs - or particularly, the whys.
I would encourage anyone who bought one of these in Europe during the period of unavailability in Canada, thus geofenced, to get in touch with In&Motion, either directly or via a Canadian retailer, to see what can be done.