Question juridique clé
Whether the appeal had to be declared inadmissible because the appellant failed to pay the advance on costs within the additional time limit.
Solution extraite
Yes. The appellant did not comply with the extended deadline, so the appeal was inadmissible.
Motifs extraits
Non-compliance with the additional time limit required inadmissibility under Art. 62 para. 3 LTF; the case could be dealt with in simplified proceedings under Art. 108 para. 1 let. a and para. 2 LTF.