Key legal question
Whether the appeal could proceed despite non-payment of the court advance within the extended deadline.
Extracted holding
No. The appellants neither paid the advance nor filed a proper legal-aid request within the non-extendable grace period.
Extracted reasoning
Under Art. 62 BGG, the advance must be paid within the set deadline and grace period. A grace period is not extendable absent exceptional, unforeseeable impediments specifically alleged. A last-day request for instalments does not satisfy the requirement, and does not preserve the deadline.