Как исправить?

"When finishing an Arena run, if the client is closed while on the rewards screen, an issue may occur that would prevent this account from starting any new Arena runs.

Due to complications related to this issue and the fact that it will require a client patch in order to resolve, we will unfortunately not be able to resolve this issue this week. We are still working to resolve this issue as soon as possible and will keep everyone posted."

Только ждать