Q: Locked out of iPad after loading update !been advised to find reciept  of purchase or original email and password !!really HELP...

You have a bazzillion folks experiencing some form of this issue in common - you do not give details of your "iPad" model - OR - when you did the update

the following is copy/paste... it is becoming impossible to answer effectively time after time

If I were you, I would Contact Apple Support - AND - file a "bug report" from the menu choice on this form > http://www.apple.com/feedback/iphone.html

The "list" of pertinent articles as I know them to be as of now

- you can read about the problems in these articles, and possibly find workarounds, particularly in the last one

• If you can't activate your iPhone, iPad, or iPod touch after installing a software update - Apple Support
• Apple pausing iOS 9.3 updates for older devices, working on activation fix | iMore
• Apple releases new build of iOS 9.3 for users of iPad 2 affected by bricking bug | 9to5Mac 
• Apple Addresses GSM iPad 2 Activation Bug With Revised iOS 9.3, but Broader Issue Remains Unfixed - Mac Rumors
• If you can’t activate your iPad 2 (GSM model) after you update to iOS 9.3 - Apple Support 
• Troubleshooting iOS 9.3 Update Problems

Please don't post the same question multiple times, all it does is confuse everyone.

desperation X 10,000,000+ ??? hard to blame 'em...

*10M is a fair estimate of installed base of iPad 2s = clearly NOT the only affected device