"We are working to determine what has gone wrong. The majority of our coins are swept and placed in cold storage often so this shouldn’t be a major issue right now but we are still working to determine the breadth of the issue. This seems to be a server issue and not a compromise but our teams are still investigating."
The majority of our coins are swept and placed in cold storage often so this shouldn't be a major issue right now.
It leaves too much wiggle room. It's like saying:
At least some coins have not been placed in cold storage so this could be an issue.
Does not look good.
With a bit of luck just the hot wallet got compromised, they trace how, fix it and honour any deposits made to the that wallet before the breach was detected. So far this is exactly what they say they are going to do. Time will tell but there's no reason to believe they wont act correctly at this stage.