Key legal question
Whether the appeal could be entered into despite non-payment of the required advance on costs.
Extracted holding
The appeal could not be entertained because the advance on costs was not paid within the original deadline or the subsequent grace period.
Extracted reasoning
The advance-cost order and the grace-period order were deemed served under Art. 44(2) BGG. Non-payment triggered non-entry under Art. 62(3) BGG.