Question juridique clé
Whether the appeal had to be entered into despite non-payment of the required advance on costs.
Solution extraite
The appeal was not entered into because the appellant failed to pay the advance within the deadline set under threat of non-entry.
Motifs extraits
After an unsuccessful, non-extendable grace period, non-payment triggered non-entry under Art. 62(3) BGG; the case was handled in simplified procedure under Art. 108(1)(a) and (2) BGG.