Cisco WLC redirect problem with Iphone and Ipads only on Safari Browser

[ngtransge]

Hello,

I have simple set up of Cisco 5508 WLC for Guest, with web redirect and local 
authentication of users. Web portal is hosted locally on WLC. The problem is
that web redirect/authentication dont not work with Safari browser on IPhone
and IPads. With Chrome it works I have attached error screenshot from IPhone. The problem only 
persists with Safari browser in IPhones and IPads, all other  browsers are
working correctly. I have trued with auto login and without auto login but 
problem still persists. 

I have trued number of OS on WLC, like 7.6.130, 8.0.110, 8.0.100, but problem still persists.

Also following command is active "config network web-auth captive-bypass enable" but problem still persists.

Can you please tell me what can be problem ?

[George Stefanick]

It would appear based on your pix the browser is throwing a flag because of the cert. On the WLC there is a guest page redirect and a cert is used. What certificate is on the WLC doing this redirect and is it valid.