Key legal question
Whether the Federal Supreme Court could enter into the complaint despite non-payment of the required advance on costs.
Extracted holding
No. Because the appellant did not pay the advance within the extended deadline, the complaint could not be heard.
Extracted reasoning
The court had ordered an advance payment under Art. 62 BGG, refused installment payment, set a grace period with an express warning of non-entry, and the advance was still unpaid after expiry of that period.