Hello,
Thanks for contacting us, and sorry for any inconvenience that might have been caused due to that.
Enabling the feature Strip Category base will only work for the post categories on your site. In order to remove product category from your permalinks, please navigate to WordPress Dashboard > Rank Math > General Settings > WooCommerce and enable the Remove Category Base option.
https://rankmath.com/kb/general-settings/#remove-category-base
Hope that helps, and please do not hesitate to let us know if you need our assistance with anything else.
Thank you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.