I hated to say this but the tarnished copper band is junk. I equipped it and it saids 1.1x more health but it didn’t change according to my pender 435 health, if it was working it should be 478.5 health but it showed 435 health.
Try to use direct.codecombat.com . We’ve added it’s just few hours ago and maybe you get the old version still.
It worked. Thanks for changing the band!