Hello,

I have fixed the issue on your website. Now the shop categories widget is displaying on every product category. Please clear the cache and check back.

Screenshot for Clarification: https://www.screencast.com/t/Q0Ls6thlr7q

It seems that you mistakenly deleted the product categories widget from Appearance >> Widgets >> Shop Page widget area.

Screenshot for Clarification: https://www.screencast.com/t/4tWNpqGER

Best Regards.