I haven't even been able to use since I agreed to the subscription because it turns out my computer device is too old and therefore not compatible with this app. I have no devices linked to lightroom, nevertheless Lightroom keeps charging me money from the Subscription, I want a full cancellation since it has been useless, but Lightroom won't allow me at this time, since my payment could not go through. I don't want this service and I'm not even supported by techincal team throughout this process.
Your issue can best be resolved by contacting Adobe Customer Care at https://helpx.adobe.com/contact/what-contact-options.html. Scroll to the bottom and click on the “Start Now” live chat link in the lower right of this page. Typing “Agent” into the chat text field will bypass the initial chat bot.