I ordered my P3D without a referral code. I mistakenly assumed there would be a field to add it later in the ordering process. Oops, there wasn't! The next day, I tried to add it by calling my local store. Except, they weren't able to add it either at the time, because "the systems were still being upgraded to handle Model 3 referrals". They took down my information, including the referral code, and told me "it would be done." Made me a bit nervous, but I decided to wait it out and let them handle it.
My referral finally showed up in my loot box about two weeks after delivery. (I used my own referral code to order the P3D.) Still waiting for free supercharging. Will call them again in another week.
This is exactly the type of thing I’m trying to avoid. It takes some of the enjoyment out of getting the car or the supercharging perk. It shouldn’t be this hard.