Defendant did not incur the sanction under CCP 1287.97 and 1287.98 for failing to pay its share of arbitration fees within 30 days of the arbitrator’s invoice. Here, plaintiff’s attorney mistakenly paid the entire initial invoice issued by the arbitrator within 30 days. After refunding the defendant’s half of the arbitration fees to plaintiff, the arbitrator issued another invoice for the defendant’s share, which the defendant paid within 30 days of that invoice but more than 30 days after the first invoice. The court concludes that no invoice was left unpaid for more than 30 days as is required for the statutory sanction to be imposed. And the statute uses the passive voice indicating that it doesn’t matter who timely pays.)