They auto-opt-in the checkbox on every purchase. My keys did NOT work and they then opted me into a $4.50 recurring charge that I didn't notice for a long time. Shame on me - but they refused to refund ANY of these and I had no idea this charge was even there. Their opt-out is hidden deceptively, then their final opt-out is disguised as a final button but you have to click a different button to finalize. Everything these guys do is to steal and is done in bad faith. Do yourselves a favor and STAY AWAY. Plenty of other sellers then to support these villains.