Mixxed

[Redacted] Still confused, what do you mean by "When your SteamID in"

So i got a question, when buying tokens and you go on the paypal website and put your credit card stuff in the thing, im confused how it will know that my steam account bought it and how it will know which account to put the tokens on, since im spending £22.50 on 150 tokens I wanna know if I wont die inside when i find out that the tokens didn't even go onto my account. Please answer me im so confused