Questione giuridica chiave
Whether the complaint was admissible despite non-payment of the court advance within the deadline.
Decisione estratta
The complaint could not be entered into because the appellant failed to pay the advance or prove timely payment as required.
Motivazione estratta
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.