After updating my ipad2 from iOS 9.2.1 to 9.3 over the air I cannot connect to activation server and the latest version of iTunes can't recognize to activate

I downloaded the update to iOS 9.3 over the air and installed. Setup cannot connect to the server to activate the ipad2. The message is to try again in a few minutes or connect to iTunes to activate. Yes I have the latest and current version of iTunes, so that isn't the issue. iTunes recognises the iPad as my ipad2 but cannot do whatever it does to be able to use iTunes to activate it. I have 2 iPads. iPad2 and iPad 4th generation. iPad 4th generation downloaded over the air and updated and activated and setup without a problem. Ipad2 updated and cannot connect to server to activate and I connect to iTunes to activate as the message says but iTunes can't activate because it sees my ipad2 and that is all it does. Of course I will try again to activate over wifi tomorrow but any suggestions would be greatly appreciated.

thand you