Delivery method don't operate

Hello, I would first like to thank you for this great plugin. Nice work :). Well done.

But I have a small problem: It is impossible to save a method for standard delivery by clicking on the “New” button.

When I click New (page admin.php = component_com_shop – Shipping & task = add_carrier) This page is provided with options standart_shipping class and class options. Well.

After, i write the name of the carrier, but when I click on save button, nothing happens! Looks like mysql query does nothing. No carrier in wp_shop_shipping_rate table, the table is empty !`. (Seen with phpMyAdmin no data in the table, no carrier added, nothing).

I’m not a programmer :/ Did I make a mistake?

Could you help me please? Thank you in advance.
Best regards

https://www.ads-software.com/plugins/orillacart/