In total three attempts will be made if your recurring payment fails. The payment might fail due to credit card issue, bank/credit card company dishonor or lack of funds. Your Kayako instance will still be operational after the first payment rejection.
There will be three payment attempts on three consecutive days and for the first failed attempt, you will get an email at your registered email address. You can respond to the email or contact us and we can look into what's causing the problem.
If you think the issue could be with your credit card, you can change card details at 'my.kayako.com' under 'Billing Info'. Please use registered email address to log in to your account.