I can vouch for this. I have returned items a year later. Without original packaging. Without a receipt. They gave me my money back no questions asked and they were even friendly about it.
Why would you need to return something (opened, used, without packaging) a year later?
It fails to do what it lived up to do.
I had an IOT plug fail (plastic melt) and returned it, and they took it back, no questions asked.