Having issues with donating

Hi,

I donated the previous time and everything worked fine.

Yesterday I extended the expiry date of my card after it expired so I could donate again, and for some reason the site says that they can't authorize it, even though I triple checked it.

I picked the 10€ option while allowing 19€ on card.

I entered the new expiry date.

I entered the new Verification Code.

Do you have any idea what might be causing the problem? Is it the registered card name consisting of characters "Đ" and "Ć"? I don't think that posed an issue before.