"The server encountered an unexpected condition which prevented it from fulfilling the request."
My son has an iPhone 6.
He gets this message when prompted to install a "required" VPN Profile in the Family Child app on his phone. The app on his phone won't move past this. I have tried to turn off Wifi, uninstalled and re-installed the app, and nothing.
Things seem to be working fine on the Family app on the parent's phone, but my son cannot use the 'damily child' app on his phone due to this issue.
Smart Family is a great way to keep control of the lines on your account. I'm sorry to learn about the issue you're having with the VPN. To confirm, are you pairing the two devices? If not, what step are you in? Here's a link with more information on Smart Family: http://spr.ly/6607GU1QL