One of two thigns happened. Either:

A) The person you contacted was mad about being 
contacted and reported you to Ebay.

B) Ebay themselves caught your message and is 
slapping your hand for trying to start a deal 
outside of Ebay.

I would guess that "A" is more likely. I think 
reporting someone for contacting a person is 
lame - I've both written to people and had people 
write to me. But Ebay doesn't allow that, and so 
you run the risk that you've written to a stick-
in-the-mud who will tattle on you.

When you write to someone in the future, I would 
definitely make it so that Ebay themselves can't 
spy on you. When I write to a seller or high 
bidder, the message I send through Ebay's system 
is nothing more than this:

"I have a question to ask you about auction #XXX. 
Please contact me at myaddy@myaddy.net if you 
would be willing to talk to me."

That way, Ebay can't accuse you of something 
wrong if they see the message (the only reason 
they keep that crappy message system is because 
people have to ask each other questions) and the 
other person can't report you for doing something 
that's not allowed. If they write back, it means 
they've indicated that they want to hear what you 
have to say. (Sticks-in-the-mud are the ones who 
won't write back. ^_~)

It's too bad your offer for the copy background 
wasn't successful. . . But then there are a lot 
of people (I'm one of them) who do not like to 
have copies made of their cel backgrounds. I have 
made only one copy in the past for a very close 
friend - and then only under the promise that it 
will be destroyed if she ever sells the cel it 
matches. I wouldn't make one just because someone 
asked me to. So I can see the other person's 
perspective. (But it's still lame that they 
reported you! ~_~)

Many Sharp Smiles,
--Drac