Questione giuridica chiave
Whether the appeal had to be declared inadmissible because the required cost advance was not paid on time.
Decisione estratta
The appeal was inadmissible because the appellants failed to pay the advance of costs within the deadlines set by the court.
Motivazione estratta
After an initial deadline and an additional deadline under Art. 62(3) LTF, the advance was still unpaid; under Art. 62(3) LTF and Art. 108(1)(a) LTF, the appeal could not be examined.