Questão jurídica principal
Whether the complaint had to be entered into despite the appellant's failure to pay the ordered advance on costs within the extended deadline.
Decisão extraída
No. The complaint could not be entered into because the advance on costs was neither paid nor duly proven within the non-extendable grace period.
Fundamentação extraída
Under Art. 62(3) BGG, failure to comply with the warned advance-payment order leads to non-entry under Art. 108(1)(a) BGG; the appellant did not make the payment or provide the required debit confirmation in time.