Bought two sets of 2x$200 VGCs from Staples on Sunday using Ink+. Used two different rewards account numbers. Went home, filled out the rebate for one and submitted. Started up TorGuard to change my IP. Submitted second rebate with same name, different address, different phone number, different email. Today I get an email that one of them has been invalidated for exceeding household limit.
Since I changed my IP and used all different information (except name and credit card) I think they must have caught me because I used the same credit card for both purchases. I doubt they would use name since plenty of people share the same name. The only other option is they used cookies in my browser somehow to catch me. Or my rewards accounts are somehow linked even though they have completely different addresses/phones/emails.
Should I have not entered rewards account numbers when I purchased the gift cards?