Unable to accès my first iPhone 5
Today I found my old iPhone 5, and I turned it on, updated the software, and then suddenly it went to lost phone mode. When I first bought the iPhone, my email address was different than it is now, and I don't have a clue what the password was I used back then. Now my iCloud account has my current email address, and a new password and I can log in to Apple, but in order to recover my old phone it wants the original email and password used when I bought the old phone. Any idea how to get my iPhone 5 back to operational mode? I would like to recover the data on it.
iPhone 5, iOS 10