Hello, I have Cisco 5508 WLC, and also i have Cisco ISE, When i created the radius configuration between the WLC and ISE after the authentication using mobile phone the i can't get ip from dhcp but when i setup the authentication from the WLC to use WAP the dhcp working without any issues
Are you using wpa/wpa2 with peap? Post screenshot of the wireless and ISE config with sensitive info removed
I suggest to read this blog, have all the information what you looking to setup.
you need to integrate WLC with ISE.