Question juridique clé
Whether the public-law appeal had to be admitted despite non-payment of the required advance on costs.
Solution extraite
No. The appellant neither paid the advance within the deadlines nor produced a timely bank or postal debit confirmation, so the appeal was inadmissible.
Motifs extraits
After an initial and then a non-extendable additional deadline, no payment was made. Under the Federal Supreme Court Act, failure to pay the advance or to prove timely debiting leads to inadmissibility.