It appears that our shopping cart provider (SparkPay owned by Capital One) has gone completely offline since about 11:10 PDT March 28th. Not only can we not reach our own cart but their main site (www.sparkpay.com) is down as well. Given we are one of thousands of customers I'm sure they are working on restoring service. Please try back later - hopefully they will get it resolved soon.
Update 8am 3/29/17 - the catalog is back up. Their entire site was down for maintenance (at an odd time of day).