Hi all,

So I put in my promo code for the Witcher 3 game and it worked!

I then put in my key for the season pass expansion, then It won't let me click anything.

expire and details are green; then under the code contents it says 0 of 1 items selected, and that I already own the Witcher 3. there is nothing to select. :S

Please help :S

At first glance, this looks like a key for the main game, not the expansion pass. Are you sure it's for the latter?
If so, contact support and let them check the issue:
https://www.gog.com/support/contact/my_orders_and_payments