Key legal question
Whether the constitutional complaint is admissible after non-payment of the advance on costs within the extended deadline.
Extracted holding
The complaint was not entered into because the advance on costs was still unpaid after the grace period.
Extracted reasoning
Under Art. 62(3) BGG, failure to pay the required advance on costs within the set additional time-limit results in non-entry under Art. 108(1)(a) BGG.