There is a hotspot with an external radius server on which all devices have worked so far. I last set up the devices 1.5 months ago and then I tested them, they worked. IPhones can't connect now. I already had everything on my iphone (Full Restore, Network Restore, Beta Upload). Tested with 3 different iPhones and none connected. All other devices are connect.
The error message:
Error opening page
Hotspot login cannot open the page because too many redirects occurred.
What could be the problem?