firstOrCreate( ['stripe_invoice_id' => $invoiceId], [ 'subscription_id' => $subscription->id, 'level' => 0, 'opened_at' => $now, // Die erste Mahnung, nicht der Hinweis: der geht sofort hinaus. 'next_step_at' => $now->copy()->addDays(DunningSchedule::dayOfLevel(1)), 'fee_invoice_ids' => [], ], ); } }