Check the battery and if there's any question, feed it a fresh, legit, Energizer or Duracell.
I use mine with Strelok Pro all the time and it works great... after I figured out that the shitty Amazon shady/bootleg batteries my dumbass was using were trash, and responsible for some issues I had with it fucking up from time to time.
I don't have any idea how long batteries last so I carry spares and will throw in a fresh one before my next 2-day.
Mine still tends to read a few degrees warm (due to usually hanging off my tripod/binos in the sun), but otherwise, works great. In Strelok I set wind direction manually, and point the weather meter into the wind... voila.