Questione giuridica chiave
Whether the insurer validly invoked premium default under Art. 20 and 21 VVG to suspend or terminate coverage
Decisione estratta
The warning letter was insufficient because it did not clearly and expressly state all default consequences, especially suspension and possible withdrawal from the contract.
Motivazione estratta
Art. 20 VVG requires a strict written warning that specifies the amount, the 14-day period, and the concrete sanctions of default. Merely attaching the statutory text was not enough to make the consequences sufficiently clear.