Dissolving accident via expert and lawyer

Hello together, maybe someone can help me with his experience. I bought a demonstration car from Hyundai 4 weeks ago (EZ 10/10). Now someone drove me into the driver’s door. Gegenerisches Versicherung is the DEVK. Beachter has immediately switched on a lawyer. Damage height (without a minimum value) 1,628 €…now the expert also talked to me and provided me with a workshop, which makes the repair (new door according to expert) for fix 1.000 €. The payment is then Is the procedure so usual. Especially when the money goes to the workshop, when should I then receive the loss of value or the loss of use (could privately organize a first-hand car). Does the DEVK then pay the amount of the report? According to the expert, I do not need an invoice, but only have to prove the repair done via photos. Does everything seem very funny to me. Maybe you have had similar experiences… Thank you very much. from in advance.