Hello ajamm,
Can you please elaborate on what went offline and never came back up? Did the chat-box tell you you offline, while you are online with your chat client, or was it something else you noticed being offline? I also understand from your second message, it’s working now again.
Our services are clustered and the main data is distributed, and served from several locations around the world as close as possible to the browsing user to achieve low latency on the bulk page loads. Also, we use non blocking content, and ‘lazy loads’ on the chat-boxes.
However, there always might be some (local) network delay or problem, and we keep monitoring and optimizing the service. If there are repeating problems from your end, I would like to ask you to submit a ticket in our support system (https://www.flexytalk.com/support/) with your account details and we will investigate what caused a problem for you.