Follow food guidance by transferring unused contents into an appropriate covered container rather than routinely storing food in an opened tin. Keep the original label information available.
What the observation tells you
The container should be clean, suitable for food contact and large enough without creating a spill risk. Changing the container does not reset the product's storage time. A written opening date and the relevant storage instructions prevent the information being lost when the tin is discarded.
A useful next step
Refrigerate according to the product label and use the food within its applicable limits. Keep raw and ready-to-eat items separated. If the refrigerator itself is too warm, a better container alone does not resolve that storage problem.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.