AA Simplymiles and Citi Offers now conflict with one another. If MaxRewards has auto-enrolled a Citi Offer (for cash back), that same offer will give an error when trying to enroll on SimplyMiles (for AA Miles & Loyalty Points.) It will say already enrolled though another source. If your goal is AA miles and/or status, this is problematic. My only solution has been to disenroll my Citi Cards from syncing.