Hello Kogamians, 

Does your XP increases to slowly ?
You now have 6 options to speed up your XP earnings.
  • Each XP boost purchase have a duration of 7 days. 
  • Duration counts down from the moment you activate the XP booster.
  • The duration period for each XP boosters can be extended by multiple purchases.
  • XP boosters cannot be combined by activating 2 type of boosters simultaneously.
  • Once a booster is started it runs to completion
This is where you can find them!

http://www.kogama.com/purchase/xp-booster/