Car insurance requires a supplementary payment.

Good evening together, have the following problem. It is about the car insurance of my father-in-law. His car had been insured with one and the same insurance for many years. At least 10 years. In March 2007 his daughter had bought a car and had it insured with the same insurance through Him, her father. In the new application was checked with the second car regulation additional vehicle, but at another place was transferred fee rate checked t (which actually does nothing about the matter in this case). The daughter paid her contributions well and the father received however since the payment requests and nothing else. This occurred to me last month while scrolling through your documents and I then contacted the car insurance company, and the insurance company informed me that the contract from the father’s car was terminated by the insurance company with the assumption that the car replaced the father’s car by the daughter. is, for whatever reason, not notified to the car registration office. So the father has been on the road for almost two years without insurance. Now, of course, the insurance comes with a new contract and asks the father to pay the contributions for the last two years, although not the father but the insurance had made a mistake. My question: does the father have to pay the contributions? and what possibilities are there to pay besides good? Am for each n Hint, thank you for any help.