This information applies to devices running iOS versions earlier than 17.0.
If you are using iOS 17.0 or later, please use the DeployGate client app installed from the Apple App Store.
If you see a message of "Profile could not be installed" like the image above, please try the following:
Launch the setting application
Select General
Select profile
Select DeployGate in the list of configuration profiles
Press Delete Profile
Go back to Safari and try installing the profile