I have just DFU restored my phone. Took an age but it got there. I entered my Apple ID and password as normal to setup, then it gets to a similar page where it says enter password for iTunes purchases but the email address was ***firstname.lastname@example.org or something...... This email address has nothing to do with me... So I skipped it. Then it does the same again but for a different email address I couldn't recognise. WTF is going on here? Hacked somehow? Apple mixing up the IDs somehow?