Hi MartWaring,
Welcome to the Sony Community!
Have you tried to Initialize the camera? Initializing the camera will remove any installed applications so you need to redownload them. After initializing, please make sure to input the correct date and time.
Also try using a different credit card if you have one. One you input the credit card, make sure to add funds to wallet and then try again.
We kindly recommend visiting our Sony Global Web site for information on contacting the Sony Support Center in your region at http://www.sony.net/SonyInfo/Support/.
Best regards,
Zander