Event Badges or Medals aren't applying bonuses

Event Badges and Medals will only apply their effects inside the Event you got them from.

If you attempt to use Event Badges or Medals in any other game mode their effects won't be applied to your team.

We will have a warning message in a future update when you start a non-World Event battle with an Event Badge or Medal equipped.

If you feel the bonus isn't applying even inside the World Event you may make a bug report here.