Hello, first question, can you describe the problem in more detail?
Usually this means your credit card needs to be updated in the Apple Store, or your card has been declined for some reason via Apple. You can change or update that info using the following directions:
Be sure to clear your browser settings and close and reopen your browser to clear any extraneous data. I will need to know which browser you use for directions on clearing settings, deleting history, and temporary files.