I think the removal function is not working anymore

The plugin will still show you what tables are either not in use or for a plugin that is not activated.

Always do a full backup of your table prior to using this or any db plugin. I find the Duplicator plugin is a great way to backup databases and highly recommend that plugin – its free for databases and it will depend on your host configuration as to how large a site you can fully backup using it without needing the pro version. On my webhost 247wphosting.com I can use free duplicator even though my site is 2gb in size due to the images and large amount of content.

When you checkmark a table now it hides it auto, and you have to rescan to see that it is checkmarked.

Then if you hit the removal button at the bottom, you will go through some prompts and eventually it will perform the removal action and if you rescan it will no longer show the table.

But if you go into mysql subsequently the tables are still there.

So I think the author has an issue.

So in summary the analysis of the database still works but the removal function does not work correctly, in my experience.