Adding a Suica Commuter card to Apple Pay is just as easy as a regular Suica. You can also renew the commuter plan right in Wallet without a trip to Suica App. However one thing you need to be careful of is the commuter plan renewal window.
Suica commuter plans are good for 1-3-6 month renewable periods that you choose when renewing the plan in Wallet. You can only renew a commuter plan 14 days before the expiration date. If you go past the expiration date and miss the renewal window you can no longer renew the commuter plan in Wallet.
In this case you have to use the Suica App and be signed in with your Mobile Suica ID. In Suica App purchase a “new” commuter plan. You will need to input the start and end station points, any transfer point station, the validity period and the start date. The last step is the purchase with Apple Pay. Follow the screen shots below.
Once complete your Apple Pay Suica commuter plan is ready to go. It is not a new Suica card, it is the same card with a new commuter plan validity period.