Did you check the site to see if all your items are still on your page?  Assuming this is a Square ecommerce site.  If this is a new page make sure that your site is set to accept orders.  Make sure Visible online and accept orders are both toggled on.  If you items are not on the page try to add them back.  

Use another browser or log out of you square account to fully veiw and test your site.