Customers report significant issues with the product's design, particularly concerning the lid and its components. The lid is frequently described as poorly designed and prone to breaking, with a safety feature using a plastic part that easily fails. This fragility, combined with the inability to purchase replacement lids separately, leads to the entire unit becoming inoperable. Durability is also a concern, as customers have experienced broken lids and difficulty obtaining replacements. The design also makes certain parts difficult to clean, leading to food waste accumulation.