I am grasping at straws trying to get my iPad2 straightened out after the original ios 9.3 update. I updated my iPhone 5S with no problems at all. When I updated my iPad2, it got stuck on the activation screen at the point where I was instructed to Activate using my AppleID. When I type in my AppleID, I get an error message saying that it cannot be activated using that email address. Does anyone have ANY suggestions? I have updated with the newer version of ios 9.3. I have tried to do a restore. I am getting the same message every time. I feel like I am totally overlooking the obvious.