Key legal question
Whether the federal appeal must be declared inadmissible because the advance on costs was not paid within the extended deadline.
Extracted holding
Yes. The advance was not paid within the second, non-extendable deadline, so the appeal is inadmissible.
Extracted reasoning
Under Art. 62(3) LTF, the court must set an appropriate deadline for the advance on costs and, if unpaid, grant a further deadline; failure to pay within that second deadline makes the appeal inadmissible. That condition was met here.