ELEMNT Bolt v2 no elevation

Hi, I am a long time Bolt user. I got a slightly used ELEMNT Bolt v2 from a friend. I factory reset the device and updated to the latest firmware. Everything works perfectly, the rides are recorded and sync to Strava, but the device does not measure elevation. During the hilly rides the “grade” is always 0.0, and total ascend is 0 ft at the end. I cleaned the barometric sensor. Am I missing anything else or is the sensor broken?