Thanks for flagging this. We’re in the middle of an incident - Crossref Status - Slower processing in the admin tool (doi.crossref.org) today - the submission threads have been stalling over the last week or so, so we have suspended the queue temporarily to sort out the problem. We’re storing your submissions and will process them as soon as possible.
We’re back to processing your submissions. We’ve got about 60,000 submissions in the backlog at the moment, but we’re processing those as quickly as we can.