Questione giuridica chiave
Whether deeming the appeal non-existent for non-payment of the advance fee without deciding the waiver request violated the right to be heard / denial of justice.
Decisione estratta
Yes. The authority committed a formal denial of justice by failing to decide the request for exemption from the advance fee before treating the appeal as non-existent.
Motivazione estratta
A pending and relevant request for waiver required a decision. Ignoring the correspondence and proceeding as if no response had been made breached Art. 29 para. 2 Cst.