Apparently there is a tab on the lid that is super easy to snap. That tab is needed for the sensor on the machine to realize the formula container lid is closed. When it thinks that lid is open, the whole machine doesn't work.
Other than that, it's a nice device, though a pretty big pain to keep clean.
Response from babybrezza.comBy CS, August 28, 2025
We’re so sorry to hear about this inconvenience. The lid material is a bit delicate and can break easily. Please contact our Customer Care team; if your product is still under warranty, we can submit a claim and send you a replacement lid.