Question juridique clé
Whether the appeal could be considered despite the unpaid court cost advance.
Solution extraite
No entry could be made because the advance costs were not paid within the original deadline or the extended deadline.
Motifs extraits
The payment orders were deemed served under Art. 44(2) BGG after uncollected return; non-payment triggered Art. 62(3) BGG, so the appeal was manifestly inadmissible and had to be dealt with in the simplified procedure under Art. 108 BGG.