hi, i was trying to input my card details to itch.io, however i am unable to because i'm not american: i'm a Brit! i tried inputting my post code multiple times, but it constantly failed. now my card is just being flat-out denied!

What can i do to get my card details on the website?! 

Having the same problem.. :/

Fellow non-American experiencing same issue. Have purchased on Steam with same card with no problem. :/

Same issue as well! Have e-mailed them and messaged on Twitter but without a response. It seems the couple of folks who have asked in the past didn't get a response so my fingers are crossed!