Question juridique clé
Whether the complaint was admissible despite non-payment of the court advance within the deadline.
Solution extraite
The complaint could not be entered into because the appellant failed to pay the advance or prove timely payment as required.
Motifs extraits
After the warning under Art. 62(3) BGG, the non-extendable deadline expired without cash payment, postal handover, or proof of account debit; non-entry followed under Art. 108(1)(a) BGG.