Or, if you bought it with a credit card, you can request a charge back. Depending on the card, doing that even 12 months after purchase is possible.
Which country is that?
Australia for one. I returned my Ring camera when they removed the customisable motion detection zones and it no longer worked as advertised (to this day, many months later) on their own website.
I think you'd have a pretty good case in the UK too - the device is no longer fit for the purposes for which it was sold, and a user could point towards Lucky's statement as a company representation as to what the product was sold for.