And how, pray tell, should Viofo handle an issue they have zero control over?
If the dashcam doesn't meet your needs, don't wait around for a fix that may never come, bellyaching about poor customer service. Go and buy a unit that meets your requirements, and sell the Viofo to someone for whom it meets their needs.
My old BlackVue had 2 G-sensor settings. 1 for parking, and 1 for driving. This allowed G-Sensor use while driving to automatically lock files in an accident. Still ... it did lock a lot of potholes and speed bumps.
Getting the sensitivity just right is nigh on impossible, because the G's placed on a car by a big truck going past a tad too close, and somebody moderately aggressively bumping your car as they walk past look the same.