The number in the status message can be anything from 0 to 9, apparently. Based on the information we were able to find after a quick Google search, these identify Facebook's Chat and Messenger servers. When you're on, the site periodically asks those servers something like, "Hey, you still there?" If the servers don't respond quickly enough, Facebook will slow down or stop altogether until it gets an answer.

Many things can keep Facebook's servers from answering quickly. Ad blocking isn't one of them, as far as we know. We couldn't find a single answer that has solved the problem for everyone. Here are the solutions we were able to find:

If you have other solutions that have worked for you, please let us know in the feedback for this article. Thanks!