Hi There @dslabs
I have tested your Cornerstone editor by creating a test page and I see that your Cornerstone editor is functioning properly (see secure note).
However when checking your homepage, it seems that you have edited those content outside Cornerstone, so the page seems to be broken.
The best option you have is to restore your site with a recent backup to receover your data. If you havevn't backup your site manually, you may ask your hosting provider to do so.
Hope that helps.