@galtech Welcome to the Netlify community.
Sounds as though you might have built your site into a subdirectory. Check out this to see if it addresses your issue:
https://answers.netlify.com/t/support-guide-i-ve-deployed-my-site-but-i-still-see-page-not-found/
You can also download a ZIP file containing all the files in your build to double-check that all the files are there, and are where you expect them to be.