I've reviewed your account & you've used the available storage in your subscription. I'd love to help you figure this out.
You can log on to the following pages and check for files or documents in Libraries, Deleted Files, Images, sync issues and assets.
Lightroom Web - https://lightroom.adobe.com
Acrobat Web (Document Cloud Home) - https://acrobat.adobe.com/link/documents/files
Please share your email address with me via direct message if you don't find anything on these platforms. I'll look into it. Thanks!