"Finally, for anyone who still has missing items on some platforms after the update: Please make sure you boot up Rocket League on every platform you have linked to your Epic Games Account, and that should help populate anything you’re looking for. "
I still haven't received my Chopper EG wheels, despite logging into all linked accounts multiple times. I have everything else, and I don't particularly like the wheels, Just thought I'd put that out there.
Accounts missing the Chopper wheels will be awarded them in the coming days.