Some clients have reported an issue processing credit cards today using the Merchant Warehouse integration with both Spectra and myStratus. Merchant Warehouse (Cayan) is aware of the issue and is actively working on a solution. We will post updates to this support blog as we receive them.
As a temporary workaround, you can process credit cards using the Merchant Warehouse Merchant ware Gateway.
We apologize for any inconvenience this issue has caused.