Hello,
1. To hide the title, please use the below custom CSS code and paste it to Theme Settings >> Custom CSS >> Mobile CSS section:
div.product-category .wd-entities-title {
display: none;
}
2. To change the columns numbers in mobile, please edit the HTML block Menu >> Then Edit the Product Categories widget >> From the Style Tab >> Layout >> Select the mobile view and add the numbers of columns: https://ibb.co/7VnZ0vx
I have done it for one category: https://ibb.co/TLNggjr
Best Regards.
Best Regards.