Key legal question
Whether the appeal had to be entered into despite non-payment of the court-cost advance.
Extracted holding
No. Because the appellant did not pay the advance within the non-extendable deadline, the appeal could not be heard.
Extracted reasoning
Under Art. 62(3) BGG, failure to pay the requested advance after final warning leads to non-entry under the simplified procedure of Art. 108(1)(a) BGG.