I am having big problems with my website and nobody can send payments to me? I discovered the error a few days ago when I noticed a sudden stop in sales...
When a customer tries to pay they get this error below:
We are sorry for the inconvenience. The PayPal account authentication settings are not yet set up, or the API security information is incorrect. We are unable to complete your transaction. Please notify the store owner so they can correct this problem. (10002) 10002 Security error - Security header is not valid
I have a developer trying to help me with this problem but there is no way he can access the API signature codes etc? something has changed?
Please can anyone help /advise me?
kind regards
Douglas
