Question juridique clé
Whether the constitutional complaint could be admitted despite non-payment of the advance on costs within the extended deadline.
Solution extraite
The complaint was not admitted because the advance on costs was still unpaid after the grace period.
Motifs extraits
Under Art. 62(3) BGG and the summary procedure under Art. 108(1)(a) BGG, failure to pay the required advance on costs leads to non-entry.