ERROR MESSAGE when customers attempt to complete a credit card transaction

Description

Customers are getting this ERROR MESSAGE when customers attempt to complete a credit card transactions.
« One or more required fields were not completed or completed incorrectly. Please update and try again. »
All the required fields have been completed and correctly completed. Even when I tried to complete an order I received the same message. I did this several times and received the same message.
The website is on a GO DADDY platform. I have already spoken for hours with GO DADDY and the issues has not been resolved.
Hassan