Hi, I received my R6 gold, but it doesn't work very well. Sometimes it locks on Scanning when I start it...
I have the same issue. What I do is remove the rumble pack and hold the DS still and it boots without issues almost every time. I think the motion support and the rumble pack conflict somehow. I haven't fully tested it yet but something else you can do is close the lid, turn it on, and open the lid after a second or so. It seems to work.
Hi, i recieved my R6 gold, too. 
But I was a litte bit confused. With the R6 i got a purchase invoice.
Do I have to pay 6,00$?
My invoice said six dollars as well, but there is no indication that it is COD (cash on delivery). Had you purchased your own there would be an invoice describing how much you paid. It's an invoice, not a bill. It appears that the NEO team simply applied a value of six dollars to it to simplify the process.
There was also a little yellow thing in the box, which i couldn't identify.
Someone said it might have to do with the DSi. See
hereAnd at least there was like, when I bought my R4, no CD in there, so that I couldn't install the bootmanager.
Please help me!
Mine came with no CD as well. It was indicated somewhere on the forums that they sometimes do, but you can download what you need from the forum. Just look for it in the main forum page for your product.