Key legal question
Whether the appeal could be entered into despite non-payment of the required advance costs within the set deadline.
Extracted holding
The appeal could not be heard because the advance costs were not paid even within the grace period.
Extracted reasoning
Under Art. 62(3) BGG, failure to pay the advance costs after notice allows non-entry; the case was therefore disposed of in simplified procedure under Art. 108(1)(a) BGG.