WooCommerce Sub-Categories Navigation Fix, dokan , twenty twenty child theme..

I have a WordPress website with WooCommerce, Dokan and a Twenty Twenty child theme. I've properly assigned sub-categories to my products, however, these sub-categories are not showing on the shop page. I'm looking to fix this issue as the missing sub-categories are affecting my website's user navigation.

Ideal freelancer for this project should have:
- Extensive experience in WordPress, WooCommerce, Dokan and child theme customization
- Proficient in resolving shop page display issues
- Understanding of user experience and navigation improvement on e-commerce websites.