1.) When you press the fridge or freezer temperature adjustment key, the characters in the fridge or freezer temperature display zone will flash. At this time you can adjust the temperature of the fridge/freezer storage compartment. After adjustment, if there is no key action in 5 seconds, the displayed value will stop flashing and return to original value to display actual temperature of the fridge/freezer storage compartment. In this case some users may think in mistake that the temperature cannot be set. It is normal in fact.
2.) When the temperature indication flashes, it displays temperature setting, i.e. the temperature desired. After the setting is completed the refrigerator will confirm your setting and stop flashing. At this time, the display will recover to actual temperature of the fridge/freezer storage compartment. As the temperature you set has certain difference with the actual temperature in the compartment, it needs a temperature balance process. After that it will display the setting temperature gradually.
How to solve:
It is a normal phenomenon.