Twogills
First, it is published, and in various places. The very first result in a Google search of "HughesNet Bonus Zone" explains that the time is 2AM to 8AM. The same for a search of "HughesNet Bonus Bytes". The FAQ also lists the Bonus Zone hours. It's also listed in the Fair Access Policy explanation. Various other places, as well. It's also listed in this thread, in the very first reply.
Regarding your data being used in the first ten days, it's because something on your network is using it. One or your devices using your data is not HughesNet's fault. Whether you ask for help in figuring out what is using your data is up to you. If you want the help, then ask. If you think it's a waste of time, then don't. This is the HughesNet Support Community, and helping customers with their issues or needs is what it's here for.
If you would like that help, please ask for it by starting a new topic.