UPDATES: February 22, 2018: CREDIT CARD PROCESSING ISSUES
Sorry that his update is LATE but here it is for the record! BK.
Since approximately 9:00 AM (MT), ClearCommerce, our credit card processing company, has been having intermittent outages. This means you and your customers may have experienced or could currently be experiencing problems closing out your order(s). ClearCommerce has not been able to provide us with a timeframe of when the problem will be fixed, but is working on it; in the meantime, we recommend waiting five minutes and retrying to submit your order. We apologize for the inconvenience.