I would be surprised if a shop sold you a C380+ Class 3 bike with a Class 1 Cargo motor, does the motor go faster than 20mph? I recommend you check with Gazelle customer service by giving them the serial number on your bike so they can check their records. Once a few years ago I saw a batch of new Gazelle Arroyo bikes delivered to a shop with the wrong Bosch plastic motor cover due to an order mix-up. Alternatively the Gazelle factory, like all brands, has suffered from supply chain disruption and may have been assembling some 2022 bikes with motors they had on hand, but a Bosch Cargo motor would be suitable for the Class 1 C380 not the plus model.