Nero CD Ripper is a product released only on the Microsoft Store(https://apps.microsoft.com/detail/9NSNQ0CPD06G?hl=en-us&gl=CN&ocid=pdpshare) and is not included in Nero Platinum Suite. Therefore, activation for Nero Platinum Suite is not shared with the Nero CD Ripper which from Microsoft Store. If you download Nero CD Ripper, an upgrade prompt will appear when rip tracks with gracenote information, and this type of subscription is managed by the Microsoft Store.

Nero CD Ripper is actually a small utility separated from Nero Burning ROM. Therefore, with your purchased Nero Platinum Suite product, you can use Nero Burning ROM to rip audio CDs. Please refer to this article to get help: 

How to rip audio CD by Nero Burning ROM/Nero Express  https://nerosupport.freshdesk.com/a/solutions/articles/44002136826?lang=en