The coupon code that you received can be entered in the settings window. Click on the three horizontal lines in the upper right corner of your screen. Now select 'Settings' in the menu that just opened. Now just click on the arrow right next to 'Redeem Coupon' and enter your code.
Team Points are based on how you play and how much you bet. The more you bet, the more Team Points you will earn for your Team. Use your XP Doubler Token to multiply your Team Points by 2! You can get XP Doubler Tokens by completing Daily Activities or spinning the Bonus Wheel.