New construction - Energy consumption of the heat pump / electric auxiliary heater

Yes, you're right, I thought it was a current modulating heat pump from Buderus.

It probably is. But for example, the 2 entries in the consumption database are at 3, rather below. So it doesn't seem to be a given to achieve good COP with the system.

Send the correspondence with a complaint to the „Fachverband Sanitär Heizung Klima Bayern“. Maybe your heating installer is a member and something will happen?! It cannot cause damage