Sporadic failures calling SDK method: createpdf.operation.createnew

I may not be in the correct place, but we're getting Unauthorized errors calling `createpdf.operation.createnew` ~90% of the time. We are in good standing with our invoices, have a valid credential, and have been successfully leveraging the API for a few years now.

I think there may be an incident on the Adobe side. Can someone please help me with support? The chat has led to several dead ends so far.