Are you using the Verizon network extender for a Verizon account or for the HughesNet account? Since you say you get 4G and don't have to use wifi when you use the network extender, it sounds to me you're using it for Verizon data, not HughesNet data, but I may be misunderstanding you. I don't use Snapchat, but I would imagine that it could use a lot of data, especially the video calls. Someone else may know more about this. The robot vacuum and the hot tub likely use data, though I'm not sure how much they would use. To see what your connected devices are and how much data they are using, you can use the community's pages: At the top of the page, click on Usage. Then click on Usage Details. When you get to the usage details page, click on Usage again and then click on Connected Devices. Then scroll to the section titled All Device Usage Last 24 Hours.
... View more