All the data SEO Booster gathers is stored in different database tables in your WordPress database.
These tables are sometimes changed and all the updates usually happen in the background without you need to do anything.
Sometimes this can fail and you need to run the update routines manually.
There is a button for that in the settings page that can help you run the database updates, but a warning will also show up on the Dashboard page, warning you if something needs to be updated.
When you push the button the changes will be forced to run and any missing tables or updates will be applied. This process will only affect the SEO Booster database tables and will only take a few seconds to run.
Once completed you will see a notice that the update was successful.