Kernrechtsfrage
Whether the appeal had to be declared inadmissible because the appellant did not pay the required advance on the court fee within the final deadline.
Extrahierter Entscheid
Yes. Under Art. 49(2) OELP, the appellant had to advance the judicial fee; failure to do so after repeated extensions made the appeal inadmissible.
Extrahierte Begründung
The appellant did not pay the requested CHF 570 advance by the final deadline of 5 January 2010, although he had been warned twice that non-payment would lead to inadmissibility.