How do I prove ownership?
I use an iPad provided by a client to test that client's software. I need to update the software, but can't do so because no one knows the password to the iCloud account the device is registered under.
The company changed hands and the previous owner left the company, so neither the email address nor the domain exist any longer. Or we would just recreate a previousowner@oldcompanyname.com email and click Lost Password.
"Everyone" thinks that the Genous Bar is the only solution, but how can I prove that the iPad belongs to me? Even my email address at the old domain is no longer accessible because of the acquisition and name change.
TIA
iPad Pro Wi-Fi, iOS 10.3.2