Could you, please, go to Appearance > Themes > install and activate WooCommerce default theme Storefront? (Do the backup of Theme Options and widgets before this!) Check if you have the mentioned issue when the Storefront theme is activated. Let me know about the results. If the problem is independent of the theme, you need to contact the support of WooCommerce plugin
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.