VPN server did not respond
I have been using the same APP VPN Defender for months even recommended it to my mother since we ere on the same work netowrk in our schools.Suddenly now the VPN dies everytime I use it at work and is showing decay at home wifi. On my ipad I primarily use wifi with my ipad placed in Airplane Mode most of the time. When I try to activate the VPN I get the pop-up that says The VPN server didnt respond. How can I get this fixed so I can use my iPad at work .The network is a school network and it open yet block at the simultaneously.
Windows 8, iCloud