The American Express fraud unit is blocking payment for subscription. Has the site been hacked?
Hello Robert, we haven't seen any drop of in AMEX transactions on the site and we have not been hacked. If you are still having issues with making a payment please raise a support ticket and we will try to resolve the issue for you - http://help.sparkol.com/support/tickets/new
AMEX finally let it go thru.
Excellent, glad that was sorted for you!