Backup weight increased dramatically

Greetings, I have the plugin in its premium version and I love it, it saved me several times from migrations and complex backups, but since the last update a site that each backup was 1Gb, went to almost 6 in just 3 months , where only a maximum of 10 more articles were uploaded, with 10 images. There is some way to know where that excess weight comes from.
Thanks and regards.

The page I need help with: [log in to see the link]