iCloud Activation Lock

I need help.

It upgraded my iPad 2 to the latest IOS and asked for my Apple ID.

My Apple ID has been long forgotten and cannot get access to it.

I also created that Apple ID with my old email (**********).

That yahoo email has been deleted because of Yahoo's *IF BEEN ACTIVE FOR MORE THAN 30 DAYS, YOU ACCOUNT MAY HAVE BEEN DELETED*

and it probably has because I haven't accessed it for 3 years.

I also forgotten the Apple ID's security question and the Yahoo email's security question too.

I have proof that I have bought this iPad such as, a receipt, photos and stuff.

What do I do?

<E-mail Edited by Host>