I just completed 2 of these this morning. I had to do them between 3AM and 7 AM CST. Both times I tried for an hour but the Asurion chat function was offline and a tech was not available. The instructions state to keep trying for an hour.
Dare--Did you use the chat at the main bottom of the page? There are 4 or 5 of them and they all show "offline" but if you pick them anyway, the last one on the bottom connected me to a chat agent. I was surprised.