Treasure Chest Opened After Watching Ad

I watched an ad and opened it. The Noble Treasure Chest of the Windy Hills. It gave me a 3000 EXP Potion. 30% of the time it's a dud. Too bad. The Noble Treasure Chest of the Windy Hills Item Chance 1000 Coins 0.1% 5,000 Gems 1.5% 3,000 Gems 2% 5 Gem Booster: 1 Hour 2.4% 5 Gem Booster: 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%