When I set the number of products per page to 40.
After 10-20 hours, your themes will automatically become 15.
We have been testing for 5 days.
check pics we sent
I navigate the shop page and I see 40 products on the page, then I go to the next page and see 40 products. I cannot reproduce the case when I see 15 instead of 40.
Most likely the problem is caused by incorrect Wocommerce settings.
Please make the full backup of your site and check the issue on the Storefront theme to detect if our theme causes the problem. Storefront is a free theme developed by WooСommerce.
Please provide the screen of how it works on the Storefront and on WoodMart.