Why can't I buy some CSGO Skins?

[jasonh1]

I'm trying to buy a knife for csgo from a website and it won't let me. Here's the issue

We can’t send your payment right now. If you keep running into this issue, please contact PayPal.

I have all the money required in my balance.

[kernowlass]

@jasonh1

You probably need to add a credit card as a back up funding source and to verify your paypal account.