The hunt began at 2, but there were still some technical glitches.
"A fix last night caused a new bug that appeared roughly two hours ago. Most puzzles work correctly. However, some puzzles are for the entire round and are called in from the main round page. There seems to be a problem with those puzzles called in from the main round page: they correctly enter our call queue, and we will call you to tell you that you are correct, but marking it correct in our call queue does not always mark it as solved in the system. Hence, although we may tell you that your answer is correct, it may not properly unlock future puzzles nor show you any messages you should receive."