Every 10 minutes online in the game, you receive:
1 'Online Point'.
These points can be used to redeem rewards in the Online Points Shop (OP Shop), which is updated periodically.
Points are transferred from your character to your account every 24 hours, allowing you to use them in the shop.
You can check the amount of points for each of your characters via the control panel -> account information. Whenever points are transferred to your account, the online points of your hero are reset and start counting again.
MixMall
Online Points Store
Gems Shop