Mncoyotehnter, I monitor lots of forums including the Facebook Bering Optics Users Groups plus help with customer service for Night Goggles so it allows me to see the potential for issues. I also personally own a Super Yoter which has accounted for over 400 coyotes in the last year. I am not aware of any Super Yoter being returned or sent to Bering (purchased from Night Goggles) due to Point of Impact moving, and we sell a ton of them. The LaRue mount has been super dependable as has the Super Yoter. With that said, the number one reason I have seen POI shifts (especially vertical) is due to the thermal being mounted too far back. For this newly designed Larue mount, the front of the mount should be 6 slots in from the back as a minimum. If you cannot get it that far forward, you will need some type of riser or extension, or it will not hold zero. Other things to watch for are handle tension, so make sure the handle tension is set to keep it nice and snug.
Another common issue I see is people shooting off bags and then missing in the field. Bags are great to get it close but make sure to check POI off your tripod. Even free-floated guns often shoot different off tripods than bags. I know mine do.
For your target, try not to use items that bloom such as hot hands as it is harder to get a precise zero due to the image blooming due to the heat dispensation.
As the weather gets colder, you start to see topics like this pop on various sites on various thermals. There were known issues in the past (Pulsar Trail V1s) where POI was moving significantly in cold weather. Lots of issues with POI are gun/ammo related as velocities and other factors change as the weather changes.
If you have checked the same gun with same ammo with similar temp swings using a different scope, and it is not moving and your scope is at least 6 slots forward and your handle is tight, I would contact your dealer and/or contact Bering and send it in.
I already talked about the adjustments, as I don't have any further suggestions as long as you are zeroing at 100 since 1" at 100 is 2" at 200, etc.