Greetings Adventurers,
We have recently been made aware of an issue affecting players on iOS devices where they are encountering an error when trying to log in with their Battle.net account.
We are working to address this issue as soon as we can. In the meantime, a workaround for this issue is to tap the “back” button on the in-app Safari window and then the forward button, or by hitting the refresh button if available.
We have identified the reason for the issue and are developing a fix, but will require some time and a new update to fix.
We apologize for the inconvenience.