У вашего броузера проблема в совместимости с HTML5
Many will ask this but this is not the PBE, orbs aren't available there to purchase. I'm a collector and currently on the NA server just for fun and will soon go back to my main server on EUW.
My Twitter: https://twitter.com/MonstrousYi
Song: https://www.youtube.com/watch?v=TG-RGt7Q1oI
League of legends - MSI 2019 & Battle Academia Orbs Opening