Question juridique clé
Whether the complaint could be heard despite failure to pay the advance costs within the fixed deadline.
Solution extraite
No. Because the advance costs were neither paid nor properly evidenced as paid in time, the Court could not enter into the complaint.
Motifs extraits
Under Art. 62(3) BGG, failure to comply with the non-extendable deadline after a warning of non-entry requires dismissal by non-entry under Art. 108(1)(a) BGG.