To activate your XP Boosters. please follow the instructions below:
Open your the inventory then go to the Loadout tab, then go to Stats.

On the Stats tab, go to Boosters Activation.

You should now see the Boosters Activation menu, you`ll have 3 tabs for Boosters: Small, Medium, Huge. These will contain the number of booster you have available for each.
Open your the inventory then go to the Loadout tab, then go to Stats.
On the Stats tab, go to Boosters Activation.
You should now see the Boosters Activation menu, you`ll have 3 tabs for Boosters: Small, Medium, Huge. These will contain the number of booster you have available for each.