2 of 5 categories disappeared

Hi,

I’ve moved my shop to another server.
Afterwards, only three of five categories has been displayed in shop page.

I have disabled all plugins except for WooCommerce and WP All-Imports.

I have installed storefront theme and activated it in order to see if my theme is broken.

I’ve added a code at the bottom of the functions.php of the child theme of my theme, which is VendiPro:
add_filter (‘loop_shop_columns’, ‘loop_columns’);
if (! function_exists (‘loop_columns’)) {
???? function loop_columns () {
???? return 5;
???? }
}

I checked the settings in WooCommerce.
I checked the tables in the database.

But I can’t see more than three categories.

Please, does anybody know that issue and what to do?

Regards,
Arno

The page I need help with: [log in to see the link]