Why don't you have that info? If this was your device, prior to the reset, you should have this account info.
Sorry, I just don't have it. I am trying to set this up for my mother. Somebody apparently started setting it up for her last year, but we don't know what account info was at the time. It was a new device, without a previous owner. I ve been following instructions for factory reset but I can't get it to wipe out whatever old acct info is there.
I went through a similar experience with (a now worthless) iPad that my father-in-law received to fly his drone with (it hasn't flown either). What you are seeing is a security feature to prevent people from accessing stolen devices. From where was the tablet purchased? Do you have proof of ownership?
FYI........I explained why I didn't have that info, so it's useless for everyone to keep asking me about this!!
Fortunately, I solved the issue myself. Phone numbers instead of email addresses were able to identify accounts.