issues with EFAST system?

Anyone else having issues with the EFAST system?  I had a client that has been trying to sign this 5500 since late yesterday afternoon but continues to receive a message saying

"ERISA Filing - Technical Difficulties - We're sorry but we are experiencing technical difficulties.  Please try back later."

FYI - I emailed the EFAST support group and received a response stating they are "reviewing an issue in IFILE that may cause a Technical Difficulties or other message when adding an attachment, validating, signing or submitting" and that the "issue will be resolved as quickly as possible."  They also referenced EFAST FAQ35a regarding attempts to file and resulting late filing.