Going through my HB keys, I thought I had snagged Braveland, but it comes up as "No keys available yada yada." Since I'd actually play it at some point, I'd be interested in one of the four daggered Braveland
keys there, assuming they have not expired.
Mine was revealed, but it comes up as a "duplicated key" when I tried to redeem it, so I guess those keys follow the same path.
Don't hesitate to tell us if the key works.
He sent me one and then the other 3, and all 4 came up with the 'duplicate' error message, presumably the same one you got.
The message indicates the games were claimed by other steam accounts, and gives you the option to try and recover that account if you just happened to forget...all of which seems like it's prooooobably not quite true.