This video explains the process of refunding a current valid Apple Pay Suica regular commute plan and purchasing the new off-peak commute plan available from today (2023-03-18) with Suica App v3.2.
Related posts also explain off-peak commute plans and barrier-free station tax train fare increases:
Apple Pay Suica • PASMO Commute Plan Guide
The ¥10 barrier-free train station tax fare increase
How much does Suica Off-Peak Commuter Pass really save you?