Questão jurídica principal
Whether the civil law appeal is admissible despite non-payment of the required advance on costs.
Decisão extraída
The appeal is inadmissible because the appellant neither paid the requested advance nor filed proof of payment within the final deadline, and did not withdraw the appeal.
Fundamentação extraída
After two orders fixing and then extending the deadline under Art. 62 LTF, the non-payment triggered inadmissibility under Art. 62(3) LTF; the case was handled in simplified procedure under Art. 108(1)(a) LTF.