F5 Access 2018 app shows "Unable to retrieve network access configuration" on iPhone 7 with iOS 12 (beta)

Hi,

This problem is now solved, by F5 through their normal support channel.

The solution was to remove the text in the "Domain Cookie" box, where we previously had our only domain name. It is found in the Access Profile under SSO/Auth Domains on version 13.1.

After removing this, the client was able to use Web Logon in iOS 12.

Thanks to everyone who contributed, especially Jason and his colleague at F5 who made the suggestion!