Hello,
I have checked your website, and the WoodMart theme is currently installed and activated.
If the theme is being deleted automatically after an update, this is not expected behavior from the WoodMart theme itself. It may be related to the update process, hosting/server configuration, a security plugin, or another third-party service.
If the issue occurs again after the update, please let us know before restoring the backup, and we can check the site to investigate what is causing the theme to be removed.
Best Regards,