Problem to connect to WLAN after upgrade to iOS 11
We are running a ZD 1100 with 9.10.2 Build 29 firmware and 7762 and 7363 APs.
After upgrading iOS devices from 10.x to 11 these devices cannot connect to the WLAN.
We are using pre shared Keys and WPA2.
Even if we try to use the guest WLAN a connection ist not possible.
What can we do resolve this issue?