Well, I don't think @Stranger was acting sassy or having an attitude.
He was genuinely asking for help and a lot of people thought the same things.
All my friends who bought the box set asked me the same questions, "What did you write? Anything specific? Do I need to write what's wrong? Do they ask for a confirmation of the order?"
When I said like, "I sent just a generic e-mail and they later asked me for my address" everyone thought: "Oh, so they really send everything without asking for anything?"
It doesn't mean they wanted to take advantage of Warner, it's just a legitimate thought.
I also wondered the same thing, actually, I was sure they would have asked for a receipt or the order number, at least.
No problem for that, of course, I bought my box set.
The tweet didn't give any tips, so it's understandable that people want to be sure before sending anything, to not miss the opportunity of getting the replacements.
Imagine missing it because there was something you needed to do but you didn't, how could you know it?
Anyway, I got all my three answers before all of my friends who sent their e-mails hours or days after me, so I guess the answer also depends from that, not sure tho.
But that's just to reassure who still hasn't received anything.
When you'll get some updates, let us know, we're in the same boat!