In order for your Overwatch key to redeem properly you need your Battle.net account region and the key region to match. In addition to that, you will not get a key; instead, you will need to link your Battle.net account to your Humble Bundle account.Gift links for Overwatch seem to be ROW though, with the exception of them not being redeemable in the following countries BU BY CN CU ER IR KP LY MM SD SY VE (HB notice). Customers from these countries will get a $5 wallet credit instead.