Thanks for reaching out. We're sorry for the trouble with Lightroom. I'd love to help you figure this out.
I have reviewed your profile & the subscription for Lightroom Mobile is active.
Subscriptions purchased from Playstore, Apple Appstore & Samsung store are managed at the respective stores. You can modify your subscription through the Android AppStore. Check this article to learn more about this: https://helpx.adobe.com/in/lightroom-cc/kb/manage-subscription-android.html
For step-by-step instructions, see Google documentation for Cancel, pause, or change a subscription on Google Play.
You can subscribe to Adobe Lightroom from this page: https://www.adobe.com/creativecloud/plans.html
Let us know how it goes.