Ya! Maybe... It can be anything. But i don't know.
I just know: I've tested Bitcoin and it didn't work. So it's a Bitcoin problem.
The quintessential after this failture is, i don't try to integrate bitcoin-payment in our webshop, because the bitcoin-system doesn't seems to be trustworthy for me. A real pity.
It just clicked! You're trying to get someone to send you free Bitcoins.