Question juridique clé
Whether the appeal could be entered into despite non-payment of the requested court advance.
Solution extraite
No. The court had to refuse entry because the advance was not paid within the original or extended deadline after express warning.
Motifs extraits
Under Art. 62(1) and (3) BGG, the party must pay an advance for expected court costs; if payment is not made even after a grace period with a non-entry warning, the appeal must not be heard.