Questione giuridica chiave
Whether the cantonal court violated the appellant's right to be heard by relying on postal-office findings without prior consultation
Decisione estratta
The right to be heard was violated because the association had not been able to comment on the postal-office letter before judgment, but the defect was cured in the federal proceedings.
Motivazione estratta
The postal-office letter was relevant to timeliness and should have been disclosed before the cantonal judgment; however, the appellant could fully address it in the federal appeal, and no concrete prejudice resulted.