Question juridique clé
Whether the constitutional complaint was admissible despite non-payment of the required advance costs within the deadline.
Solution extraite
No entry could be made because the appellant failed to pay the advance costs or prove timely payment as required after the non-extendable grace period.
Motifs extraits
The court had warned that non-compliance would lead to non-entry under Art. 62(3) BGG. The appellant neither paid in cash nor via postal/bank transfer with the required debit confirmation.