Deactivate all your other plugins and check. If the settings are there now, reactivate plugins one-by-one to try to identify which is causing the problem.
have any other way to solve it without uninstall plugin
check “woocommerce/includes/admin/settings/class-wc-settings-products.php” line 196-208 and make sure you see this code or just replace the file
array(
'title' => __( 'Single Product Image', 'woocommerce' ),
'desc' => __( 'This is the size used by the main image on the product page.', 'woocommerce' ),
'id' => 'shop_single_image_size',
'css' => '',
'type' => 'image_width',
'default' => array(
'width' => '600',
'height' => '600',
'crop' => 1
),
'desc_tip' => true,
),
While in admin CP, check the source with your browser or css to see if the field was set to display none or not visible for some reason. Check and see if the element exists in the CP.
As @kimsf says.
I was not suggesting uninstalling your plugins, just deactivate them. Don’t delete files. Your plugin settings will be retained and will reapply automatically when you reactivate your plugins.
