I can't buy the game

Hi guys !
I would like to buy insurgency sand., but I can't.
When I press "Purchase" on steam, it says:
"Your purchase has not been completed. The payment processor has reported an authorization failure. Please select a different payment method."

I tried this using paypal and debit card, but it says the same. Can anyone help me ?

Thanks in advance !

you gotta canel the last transaction whe the error pops up

or youll have to verify something when using paypal dunno

You're going to have a lot more luck contacting Steam support than posting here.

Ok, thank you guys; I will try something