When I click activate on an EXP boost nothing happens. I have a 7 days and a 3 day and not a single thing happens when I press the button to equip the boost, it makes the click sound but doesn't activate anything.
See the latest hotfix notes: Boosts should now equip properly (PS-731) https://forums.station.sony.com/ps2/index.php?threads/hotfix-11-12.207293/