Key legal question
Whether the appeal could be entered into despite non-payment of the required cost advance within the additional deadline.
Extracted holding
No. The appeal could not be considered because the appellant did not pay the cost advance even by the extended deadline.
Extracted reasoning
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.