Key legal question
Whether the appeal could be entered despite the unpaid advance costs.
Extracted holding
No entry could be made because the required advance payment was not made within the non-extendable deadline and no timely proof of payment was provided.
Extracted reasoning
The court had warned of non-entry under Art. 62(3) BGG. The appellant neither paid in cash nor by valid transfer mechanism nor submitted the required debit confirmation within the deadline.