Powder that has absorbed moisture can clump and become difficult to measure or dispense as intended. Storage condition is therefore relevant when the product's behaviour changes.
Understanding this situation
Follow the detergent maker's storage instructions and keep packaging closed and away from children. A clump is not a reason to use extra product, and breaking it up does not necessarily restore the original measuring assumptions.
A useful next step
Use a suitable product in good condition and review the dosing method. If detergent remains in the drawer despite correct use, record both the product condition and programme. Do not probe drawer passages with sharp objects to force compacted powder through.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.