Hi there,
Welcome to SeaTheme forum.
First, please log in to your website hosting control panel. Some hosting control panels provide backups at specific time points, allowing you to restore to a backup prior to the data import. If your hosting control panel does not have this feature or if you haven’t made any backups yourself, you may need to manually reconfigure some settings. The import process typically only overwrites the website settings(theme options, fonts), such as the header and footer areas. It does not overwrite your previously existing posts and pages. You mentioned that you are unable to see your website, can you confirm if you can still access the previously published articles(pages, posts, media images…)?
Regards!
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