Multisensor used as a garage door sensor issues

I got my SmartThings package yesterday. I got a multisensor to use on my garage door, and flipped the mode so I could tip it up and down, and it would work most of the time. There’s been a few times when it failed to sense its orientation. I thought it was due to the fact that the sensor was stuck or something. But in the app, I see the x,y,z values and those are actually being updated, but not the door state.

On an “Open”, it had readings of 1008, 133, 205. On “Closed”, it had 1000, 134, 221. Normally “Closed” will have a small value for that first number. So the sensors were being updated, but not the overall status. Am I interpreting this correctly?

The second issue I had was trying to create an alert if the garage door was open for more than 5 minutes. It will never fire. But if I leave it as 0 minutes (the app shows “false”), then I can be instantly notified of the door opening. But editing that rule and setting the value to “5” will never work.