Paying by credit card is considered safe, fast, and uncomplicated worldwide. This also includes online payments. As the cardholder, you enter your credit card number, the appropriate expiry date, and the corresponding card verification number.
After our payment service provider has checked your credit card number in real time, there may be reasons why a payment could not be processed. The most common cause is unintentionally entering wrong credit card information.
If you can already rule this out, your bank probably rejected the booking. In this case, please check whether your credit card is approved for international payments and transactions via the internet. An exhausted credit card limit can also be another reason for unsuccessful payments.
You can obtain detailed information about this from your bank.