If your subscription gets canceled, there will not be any future recurring charges will be done from your card. Additionally, the licence to the Monthly Elite mCommerce plan will get canceled after lapsing the subscription period. You will not able to make any changes to the mobile app via the extension.
The catalog synchronization will not be done.
The mobile app will work as normal for 14 days from the date of cancel and after that, the mobile app will also be not working until you resume the subscription.