I have cold in the apartment / problems with heat from the elements
The heat delivered to the elements is controlled centrally in the house via automation and is based on the current temperature in a number of control apartments.
In case of rapid weather changes when it gets colder, the heat to the apartments is increased, but when it takes some time for this to break through, you can feel that the elements do not work as well.
Make sure you do not have too much furniture / fabric in front of the elements so the heat has a chance to spread. You can too check that the element is aerated proper.