Donations can fail for many reasons. Here is some information about why and what they mean.
There are hundreds of reasons why a donors credit card may be blocked or a donation fail. While we don't know the exact reason, we typically will be able to communicate a reason to the donor.
We are only able to pass along the message that we receive from the bank or payment processor.
Some reasons given are very vague (example: Do Not Honor).
Some are very specific (example: Insufficient Funds).
The level of detail depends on the bank.
Sometimes, waiting a few hours and trying again can resolve the issue. Otherwise, the card holder would be required to contact their card issuer or bank.