Power Zones keeps changing

So I saw this thread from three years ago I can't believe it's still an issue: https://forums.garmin.com/sports-fitness/cycling/f/edge-820/125555/power-training-zones-keep-changing-on-head-unit and I never hit in on my 820, but on my 830 I keep getting changed to the 9 zones instead of the 7. I keep resetting it and then it comes back. REally frustrating to be in a race and all of sudden you notice the zones are all screwy.