Key legal question
Whether the appeal had to be entered into despite non-payment of the court advance
Extracted holding
No. Because the advance costs were not paid within the non-extendable additional deadline and no proof of timely payment was provided, the appeal could not be considered.
Extracted reasoning
Under Art. 62(3) BGG, failure to pay the requested advance costs within the deadline, after warning, leads to non-entry under Art. 108(1)(a) BGG.