The payment systems on Kong and Facebook Canvas are completely separate and unique to those platforms. If you haven't submitted a ticket to support about this with details of these errors please do so. In the meantime I will confirm on Kongregate that the crates are working as intended when doing a direct purchase with $USD.
EDIT: There was an issue with the Crates for $USD on Kongregate that has now been fixed. Apologies for the inconvenience.
Last edited: May 21, 2015