How long

maybe someone could help you in exchange for something else like steamwallet or PayPal
I would have done it but I already bought the humble bundle twice and I'm not allowed to buy it again according to humble rulles
(at lest I think you mean dead Island)
or maybe someone has it in the trade section and is willing to trade it for cards?

for changing GA game

For clarification: If you put up a game, you are obligated to give that exact game.
The winner may write in the giveaway "I agree to cancel" which will allow staff to delete your giveaway, but you may not substitute another game for the one you listed.

The 'Change Giveaway Game' support ticket is only intended for use as follows:

SleepyCat (Moderator)
This option is reserved for changing one edition of the game to another or changing titles of giveaways for downloadable content for the same game.

If you're unable to get a ROW key for giveaway, you'll need to get the giveaway deleted and repost it as RU/CIS, as there's no other way to "fix" the current giveaway.