Avanza: The coffee is too weak.

Avanza: Suggestion 1: The coffee beans may not be falling into the grinder. Excessively oily beans may be the cause. Clean the bean reservoir with a damp cloth and a standard, mild washing-up liquid. Ensure that no liquid enters the grinder. If necessary, tap the bean reservoir gently.
Suggestion 2: The grinder setting may be too coarse. Adjust the grinder to a finer setting while grinding.
Suggestion 3: Try a different type of coffee.