Apologies for facing issue with plugin.
Restore button allow you to restore deleted rows data.
it wan’t updated changed data. For complete restore you need to restore via phpmyadmin.
If you have set cron job on twice daily and there in no user visited site then cron job not run on that day. because WordPress trigger cron file on user/admin view.
Might be cron job setting not updated properly in option table.
logging into phpMyAdmin and UPDATE wp_options SET backup option_value to monthly
OR clear all cron job and set setting again.
Please check following url for more information.
Let us know in case still any issue. Happy to Help!!