With over 20 years of experience making award-winning beverage machines you can trust Dualit’s dedication to quality.
Check that the capsule is being pierced when the handle is put down.
The 'pyramid plate' at the front of the capsule chamber may need cleaning. Check that there is no capsule remnants stuck to the pyramid plate and/or using an old toothbrush scrub the plate to remove any debris.
A descale may also be required for a deep clean of the capsule chamber.