Question juridique clé
Whether the complaints could be entered into despite non-payment of the ordered cost advance within the additional deadline.
Solution extraite
No. The appellant did not pay the advance, and no exceptional grounds justified a new deadline.
Motifs extraits
Under Art. 62(3) BGG, failure to pay the required advance after a valid grace period leads to non-entry unless another grace period must exceptionally be granted; that was not the case here.