I just received an email that says more information needed for my phone to be registered. And I still didn't have Care+ showing up in the status.
I purchased from samsung.com and submitted the email receipt (printed as PDF) they sent me. How is this not good as proof of purchase?
Update: it now shows covered by Samsung Care+, while the product registration still shows rejected. Maybe if I had done nothing it would still foxt itself. Just confusing and not that smooth an experience.