Treasure Chest Opened After Watching an Ad

Opened after watching an ad The Noble Treasure Chest of the Windy Hill Got 500 gems. It's an 8% chance. I think I got 500 gems yesterday too. The Noble Treasure Chest of the Windy Hill Item Probability 1000 Coins 0.1% 5,000 Gems 1.5% 3,000 Gems 2% Gem Booster x5: 1 Hour 2.4% Gem Booster x5: 30 Mins 3% 1,000 Gems 4% Gem Plus - 30 Mins 6% 500 Gems 8% 10,000 EXP Up 20% 5,000 EXP Up 23% 3,000 EXP Up 30%