Question juridique clé
Whether the appeal could be entered into despite non-payment of the required cost advance within the additional deadline.
Solution extraite
No. The appeal could not be considered because the appellant did not pay the cost advance even by the extended deadline.
Motifs extraits
Under Art. 62(3) BGG, failure to pay the advance within the set grace period leads to non-entry; the court therefore issued a summary non-entry decision under Art. 108(1)(a) BGG.