A few weeks ago AuthorizeNet disabled prior auth functions on their SIM gateway until further notice for a security issue. This has caused many hosts domain charges to fail but the domain would be renewed costing some hosts hundres and others thousands of dollars in renewal fees that would need to manually be entered. The solution was to switch to AuthorizeNet AIM gateway which Hsphere didn't support. The solution we made was an AuthorizeNet AIM gateway for Hsphere Hosts. Visit the product page to purchase this addon.