Questão jurídica principal
Whether the appeal could be entered into despite non-payment of the CHF 3,000 advance costs within the set deadline.
Decisão extraída
No. After the non-extendable grace period expired without payment or proof of timely payment, the court had to decline to enter into the appeal.
Fundamentação extraída
Following the order setting a non-extendable additional deadline under Art. 63(3) BGG, a further extension was not available by law. Since the advance costs were not paid in time and no proof of timely payment was produced, non-entry followed under Art. 62(3) BGG and Art. 108(1)(a) BGG.