Question juridique clé
Whether the appeal was admissible despite non-payment of the required advance on court costs.
Solution extraite
The appeal was inadmissible because the CHF 500 advance was not paid within the extended deadline.
Motifs extraits
Under Art. 62 al. 3 LTF, failure to pay the advance within the additional time limit leads to inadmissibility; the defect was manifest and could be decided in simplified procedure.