iOS Beta Enrollment Program

It seems when trying to go to the Software Beta Program enrollment page, it only shows enrollment for Macs. Where is the page for enrolling iOS devices? I read somewhere recently that the page would come up if you typed in https://appleseed.apple.com/sp/betaprogram/profile, it would show the iOS enrollment page but now all it does is redirect you to the Mac enrollment page which is https://appleseed.apple.com/sp/betaprogram/guide.