Antonio,
if we cannot see the database signature, this is going to be difficult to troubleshoot.
I am looking for something like:
CREATE TABLE `tada_j2store_configurations` (
`config_meta_key` varchar(255) NOT NULL,
`config_meta_value` text,
`config_meta_default` text
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3;
INSERT INTO `tada_j2store_configurations` (`config_meta_key`, `config_meta_value`, `config_meta_default`) VALUES
('13fe403f608b', '1', NULL),
('921373770e56fe3', '1', NULL),
('addtocart_action', '3', NULL),
('addtocart_button_class', 'btn btn-primary', NULL),
('addtocart_placement', 'default', NULL),
('admin_email', 'support@j2commerce.com', NULL),
('allow_guest_checkout', '1', NULL),
('allow_password_validation', '1', NULL),
('allow_registration', '1', NULL),
('attachmentfolderpath', 'media/downloads', NULL),
('auto_apply_shipping_rate', '1', NULL),
('backend_voucher_to_shipping', '1', NULL),
('bootstrap_version', '5', NULL),
('cancel_order', '1', NULL),
('catalog_mode', '0', NULL),
('checkout_price_display_options', '1', NULL),
('clear_cart', 'order_placed', NULL),
('clear_outdated_cart_data_term', '90', NULL),
('config_cart_empty_redirect', 'cart', NULL),
('config_cart_redirect_page_url', '', NULL),
('config_continue_shopping_page', 'previous', NULL),
('config_continue_shopping_page_url', '', NULL),
('config_currency', 'USD', NULL),
('config_currency_auto', '1', NULL),
('config_including_tax', '1', NULL),
('config_length_class_id', '2', NULL),
('config_tax_default', 'billing', NULL),
('config_tax_default_address', 'store', NULL),
('config_weight_class_id', '4', NULL),
('continue_cart_redirect_menu', '101', NULL),
('continue_shopping_page_menu', '101', NULL),
('country_id', '223', NULL),
('coupon_update', '1', NULL),
('date_format', 'm/d/Y', NULL),
('default_payment_method', 'payment_paypal', NULL),
('display_price_with_tax_info', '0', NULL),
('downloadid', 'a19b154a321855f7f2', NULL),
('download_area', '1', NULL),
('enable_coupon', '1', NULL),
('enable_falang_support', '0', NULL),
('enable_inventory', '1', NULL),
('enable_voucher', '1', NULL),
('export_column_per_product_option', '1', NULL),
('hide_shipping_until_address_selection', '1', NULL),
('hold_stock', '60', NULL),
('image_for_product_options', '0', NULL),
('installation_complete', '1', NULL),
('invoice_prefix', '', NULL),
('isregister', '0', NULL),
('j2commerce_isnew', '1', NULL),
('j2store_enable_css', '1', NULL),
('jquery_ui_localisation', '1', NULL),
('limit_orderstatuses', '*', NULL),
('load_bootstrap', '0', NULL),
('load_fancybox', '1', NULL),
('load_fontawesome_ui', '1', NULL),
('load_jquery_ui', '3', NULL),
('load_minimal_bootstrap', '0', NULL),
('load_timepicker', '3', NULL),
('option', 'com_j2store', NULL),
('plugin_check_date', '2025-12-31', NULL),
('postalcode_required', '1', NULL),
('prepare_content', '0', NULL),
('price_display_options', '2', NULL),
('product_option_price', '1', NULL),
('product_option_price_prefix', '1', NULL),
('queue_key', 'e1edfe9ea1e14f8', NULL),
('queue_repeat_count', '10', NULL),
('related_product_columns', '3', NULL),
('send_default_email_template', '1', NULL),
('shipping_mandatory', '0', NULL),
('show_base_price', '1', NULL),
('show_clear_cart_button', '0', NULL),
('show_customer_note', '1', NULL),
('show_item_tax', '0', NULL),
('show_login_form', '1', NULL),
('show_logout_myprofile', '0', NULL),
('show_manufacturer', '0', NULL),
('show_postpayment_orderlink', '1', NULL),
('show_price_field', '1', NULL),
('show_product_price_for_register_user', '0', NULL),
('show_product_sku_for_register_user', '0', NULL),
('show_qty_field', '1', NULL),
('show_shipping_address', '1', NULL),
('show_sku', '1', NULL),
('show_tax_calculator', '1', NULL),
('show_terms', '1', NULL),
('show_thumb_cart', '3', NULL),
('show_thumb_email', '1', NULL),
('stock_display_format', 'always_show', NULL),
('store_address_1', '854 Tada Street', NULL),
('store_address_2', '', NULL),
('store_billing_layout', '<div class=\"row\">\n <div class=\"col-md-6\">[first_name] [last_name] [email] [phone_1] [phone_2] [company] [tax_number]</div>\n <div class=\"col-md-6\">[address_1] [address_2] [city] [zip] [country_id] [zone_id]</div>\n </div>', NULL),
('store_city', 'Job Lake', NULL),
('store_max_sale_qty', '', NULL),
('store_min_sale_qty', '1', NULL),
('store_name', 'Joomla 5', NULL),
('store_notify_qty', '', NULL),
('store_payment_layout', '', NULL),
('store_shipping_layout', '<div class=\"row\">\n <div class=\"col-md-6\">[first_name] [last_name] [phone_1] [phone_2] [company]</div>\n <div class=\"col-md-6\">[address_1] [address_2] [city] [zip] [country_id] [zone_id]</div>\n </div>', NULL),
('store_zip', '0K6', NULL),
('task', 'saveConfig', NULL),
('termsid', '', NULL),
('terms_display_type', 'link', NULL),
('update_complete', '1', NULL),
('view', 'postconfig', NULL),
('zone_id', '3655', NULL);
It would be great to get that information.
If too difficult, we can go to plan B, where you can install a plugin of our own on your site, which should help get that info.