P: Subscriptions from Mobile App Stores don't work with Desktop Software
We get so many questions about this I decided that an authoritative post would be helpful.
If you've purchased a subscription from a mobile app store, (e.g. Apple's App Store, the Google Play Store or the Samsung Store), the subscription is for mobile devices only. Running Lightroom Desktop on a PC or a Mac requires a specific subscription purchased for desktop computers.
The Desktop subscription includes access to the Mobile product but not vice-versa.
Lightroom Web is included in all subscriptions.
If you've purchased the incorrect subscription for your needs, or your needs have changed, please login here to update your plan: https://www.adobe.com/products/photoshop-lightroom.html
After subscribing to the Ecosystem plan, you can decide whether to cancel your mobile-only plan.
Hopefully this helps.

