Key legal question
Whether the federal appeal was admissible despite the appellant's failure to pay the advance costs within the prescribed non-extendable deadline.
Extracted holding
No. The appellant did not timely pay the advance costs or provide the required proof of payment, so the appeal could not be considered.
Extracted reasoning
After the request for waiver was refused, the court set a non-extendable deadline under Art. 62 para. 3 BGG and warned of non-entry. The appellant neither paid in cash nor demonstrated timely debit of the amount; therefore Art. 108 para. 1 lit. a BGG required non-entry.