Key legal question
Whether the complaint could be admitted despite failure to pay the required advance on costs within the extended deadline.
Extracted holding
No. The deadline for payment was missed and the complaint therefore could not be entertained.
Extracted reasoning
Under Art. 62 para. 3 BGG and the simplified procedure of Art. 108 para. 1 lit. a and para. 2 BGG, non-payment of the advance after warning leads to non-entry.