Treasure Chest Opened After Watching an Ad

I watched an ad and opened it. Got a 5000 EXP Potion from the Noble Treasure Chest in the Windy Hills. It's a 23% miss rate. Noble Treasure Chest - Windy Hills Item Probability 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%