Questão jurídica principal
Whether the appeal could be entered into despite non-payment of the advance costs within the extended deadline.
Decisão extraída
No; the appeal could not be entered into because the advance costs were neither paid in cash nor duly proven as paid within the non-extendable deadline.
Fundamentação extraída
The appellant failed to comply with the advance-cost order and the warning of non-entry under Art. 62(3) BGG; therefore non-entry had to follow under Art. 108(1)(a) BGG.