When you buy the Valentine's Day offer, 300 gems are applied to your account (same manner as all in-app purchases) and 30 gems are gifted to your Alliance members. They can collect their gift from their in-game inbox.
Why didn't I received the 30-gem gift?
- Check your in-game inbox
- You weren't in the alliance at the time of the purchase
- The buyer was not in the alliance at the time of the purchase
- You purchased the offer so you get the 300 gems - not the gifted gems