u/Expensive_Reserve_43

Hi everyone, hope all well. Lately when I have been going for my runs it is saying 0 elevation up or down and then no stairs climbed (I’m in a hike challenge so love when stairs are climbed). Yesterday I did 16km through Sydney and again 0 elevation and 0 stairs climbed. Yet when I’ve walked this route without recording an activity it is about 30 stairs climbed. On Strava it says around 146 elevation. How do I fix this?