VPN settings lost - iOS 10.0.2
I had VPN settings stored in my iPad. The VPN connections worked well until last iOS update. Now ALL my VPN connections disappeared. To make it even worse - I am unable to set them again, because there are new mandatory fields: VPN type and Shared key. I do not have a clue how to fill them since I never needed them when connecting to VPN via my iMac - please see the screenshot.
It makes me mad. I will welcome any suggestions.
iPad Mini, iOS 10.0.2, iPad mini Retina 4