Online my account is full but on the desktop app it shows less space is used.

We can confirm that the most recent releases of Dropbox should have resolved this issue. Users affected by this issue were unable to see all of the backups on their account. This meant that when they believe they deleted some or all of their files, there could still be backups taking up space on their account. This should no longer be affecting users who should be able to see all of their backups.  

You can find out deleted information on disabling and deleting backups below:

If you disable the backup and choose to "Leave content in Dropbox", your backup content would still be there until it was permanently deleted. 

When you go to the Backups page and see no content, be sure to check the deleted section, too.

You can download the files from this location if you need to store them locally on your device. 

To clear out the data from the deleted backup, follow these steps:

1. Navigate to dropbox.com/backup/all
2. Click on Show deleted backups
3. Select their backup and click on permanently delete

Some users did not have backups, but they were members of shared folders which were taking up space on their accounts. You can remove shared folders using these instructions.

If you are still experiencing quota issues after following these steps, then confirm that we can reach out to you via email and our support agents will look into this with you.