Key legal question
Whether the appeal had to be entertained despite failure to pay the advance costs within the set deadline.
Extracted holding
The appeal could not be heard because the appellant did not pay the advance costs or prove timely debiting within the non-extendable deadline.
Extracted reasoning
After the denial of legal aid and a final deadline under Art. 62(3) BGG, non-payment triggered non-entry under Art. 108(1)(a) BGG.