The rent invoice will be delivered to your personal mailbox by paper every month. The rent 300 € is to be paid at the beginning of every month according to the due date marked on the invoice. The invoice has a reference/index number that you must use when paying.
The rent must be paid by bank transfer via internet, citing the correct reference and account number. It is not possible to pay the rent in cash or by credit/debit card at the Retrodorm's office.