[2019] iOS v9.21 patch delay update

Update: We've passed certification with Apple but iOS players will still need to wait until the v9.21 client update is available on the App Store before they're able to log in. 

We'll provide a final update once it's available to download. Thank you for your patience.

Update 2: We’ve resolved the issues preventing players on iOS from being able to download and login to the v9.21 update.