Thanks for reply, we got new ZoneFlex R310 AP's and installed new firmware 10.0.1.0.17 on ZD 1200. Now, we have perfect connection to iOS11. The last FW 9.12.0.0.336 for the old 7962 AP's did not work.
We did iOS 11 update today, also lost connection to ZD1200 and 7363 APs. Apple support knows this problem. Connection to an old Zyxel NBG5715 Dual Band Router works with iOS11. I hope, Apple and Ruckus will fix the problem soon.
