Key legal question
Whether the constitutional complaint had to be dismissed because the advance costs were not paid in time.
Extracted holding
The court did not enter into the complaint because the advance costs were neither paid nor properly evidenced within the non-extendable deadline.
Extracted reasoning
After the reminder under Art. 62(3) BGG, the appellant still failed to pay the advance or submit the required proof of timely payment. Under Art. 117 BGG in conjunction with Art. 108(1)(a) BGG, non-entry was therefore mandatory.