I have reread the rules, and then read it again to make sure I understand where my mistakes were made. I have understood the rules, and I wanted to clarify where I misunderstood to help better understand why maybe other people made the same mistakes.

As I was the seller, I did not understand that I was supposed to write that it was TF2 Keys. As I had looked at this template:
I sold 3 earbuds. Amount received: $70,00 USD, Fee amount: $0,00 USD, Net amount: $70,00 USD
I received the money via PayPal. He went first. [URL OF WTB/WTS, SHOP ETC THREAD HERE]

As earbuds didn't specify TF2, I got confused on specifying it as the Purchasing one had it, but buds didn't.

In the past, when posting amount sent and fees, you had to put a negative sign. To indicate that it was subtracting, so therefore I didn't understand that it was still needed.

Last part, I'm unsure of the timestamps because of the different timezones. But last night I had gone to bed with only one message from BlackAdder telling me to fix it, and woke up with a ban. So the whole misunderstanding didn't even allow me to fix it before my next 5 rep posts. And last but not least, in my infraction notice, it only told me about: "explain you where you should get Amount sent/received, Fee amount and Net amount from." And nothing about stating that it was TF2 items.

Anyways. As always I'm glad to be as helpful as possible, and not get anymore infractions.

Thanks,
ApolloTheLion