У вашего броузера проблема в совместимости с HTML5
This weeks update added a new Tactical Assault Rifle, nerfed the Drum Gun and the Baller, and also vaulted the Compact SMG.
v9.01 Patch Notes: https://www.epicgames.com/fortnite/en-US/patch-notes/v9-01?sessionInvalidated=true