Questione giuridica chiave
Whether the cantonal appeal was filed within the 30-day deadline after deemed service of the migration authority's decision.
Decisione estratta
The appeal was late because the appellant had to expect official correspondence and the registered decision was deemed served after the unsuccessful collection period.
Motivazione estratta
He had applied late for renewal, had been repeatedly asked for documents, and had been expressly warned that the authority intended to refuse the request and set an departure deadline; therefore service rules applied and the appeal period expired.