When you make the Premium Daily Reward bonus purchase, you’re buying it for the current Daily Reward cycle of 30 days. That means that you will be able to claim all of the free and the premium daily rewards in that cycle, no matter when you bought the Premium Daily Reward bonus.  

 

After the 30-day cycle is complete, a new Daily Reward cycle stars, and another Premium Daily Reward bonus pass is required if you want to keep claiming the next batch of premium daily rewards.