Questione giuridica chiave
Whether the appeal could be entered into despite non-payment of the court advance within the deadline.
Decisione estratta
No. The appeal could not be considered because the required advance payment was not made in time and no valid proof of timely payment was provided.
Motivazione estratta
After a warning under Art. 62(3) BGG, the appellant neither paid the advance nor complied with the payment-proof requirement. Under Art. 108(1)(a) BGG, the consequence is non-entry.