Key legal question
Whether the appeal had to be entered into despite non-payment of the advance costs.
Extracted holding
No. Because the appellants did not pay or validly prove timely payment of the advance costs within the non-extendable deadline, the Federal Supreme Court declined to enter into the appeal.
Extracted reasoning
After a deadline under Art. 62(3) BGG with express warning of non-entry, the advance costs were neither paid in cash nor validly credited to a Swiss postal or bank account, and no timely debit confirmation was filed.