Game Says My Order Is Credited, I Didn't Order Anything

As the title explains, when I logged into my Krosmaga, I saw a bubble read:
"! Your order number 299989253 () was just credited."

The problem is, I didn't order anything, nor did I type in any code to get anything. I got scared thinking my account might be hacked but there seems to be no suspicious act done from my account. I was wondering if anyone has an idea as to what that bubble might be for? Or did anyone experience anything similiar?