Wyze Thermostat inside temperature all over the place

Just installed my wyze thermostat and the inside temperature reading fluctuates all over the place. It will read 59 degrees, climb to 69, then drop down to 61 with in a minute, and repeat. I had to turn the system off because it was causing the heater to turn on every couple of minutes. Apartment got to 77 degrees, but the thermostat would read 61 degrees and cycle the heater. Temperature was set for 70 before I had to turn it off. Any idea whats going on?

Having similar issues. Seems to fluctuate between chilly and hades. Kind of annoyed.

My thermostat was working fine but then I switched off the power and started having this issue. Did you find any fix to this? Or is my unit just being faulty?