Hi straycam,
Yes, I am using the same setup. And I like it a lot! I did find the problem. We have a lot of devices - Apple Watches, ipads, phones, computer. The car sits in the garage, and a number of these devices are in the range of the Verizon hotspot. Before I posted my problems with excess data use I had gone around the house and turned off auto join on all of our devices. Or so I thought. Turns out that two of them still were set to auto-join. I don’t know how this happened, as I made a specific effort to do this and I did it with each and every device. On the second pass I found the two that were still connected and, as they say, the rest is history. The way that I learned that there was leakage was simple, just looked at the number of devices connected to the hotspot and was pretty shocked. Now the only thing that’s connected is the Blackvue and data use is minimal, per expectations.