Questão jurídica principal
Whether the appeal had to be entered into despite non-payment of the court costs advance
Decisão extraída
No. Because the appellants did not pay the advance within the deadline and did not provide the required proof of timely payment, the appeal could not be considered.
Fundamentação extraída
Under Art. 62(3) BGG, failure to comply with the non-extendable deadline after warning of non-entry requires non-entry under Art. 108(1)(a) BGG.