Check whether both screens describe the same value and whether the app is connected and current. One may show a target, another a delayed status or previously received information.
What the observation tells you
A disconnected phone screen cannot confirm present food-storage conditions. Repeatedly changing settings from both places makes the sequence harder to follow. Connectivity trouble and a cooling fault may coexist without sharing the same cause.
A useful next step
Use the manufacturer's app guidance, note the last update time and confirm the physical controls. Measure storage conditions appropriately where needed. Report the disagreement precisely instead of assuming that either screen alone proves the fridge is working.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.