Do I have to use my real information?
Yes, your real information must be used at all times (both within your instaGC profile and on offers you complete). No initials, no information from others, no old information, or no fake / fraud information may be used - even if you have permission from someone else to use it.
If you do not want to use your information on offers, simply do not do those offers that request it. There are plenty of offers to choose from that don't request your name, address or phone number.