EU VAT calculation does not work

Hi,

I tried the EU VAT exemption but it is not working properly. I made a staging version of a website and I disabled all of the plugins changed Astra Pro theme to Storefront.

Then I tried a new WP installation, with Woocommerce and Booster free installed. No luck.

I tried the Woocommerce and Booster VAT settings in all variations. No luck.

In 100 cases, it works maybe once e.g. if I remove products, add a product, remove a valid EU VAT number, add again etc.

Enabled Booster plugins: EU VAT Number

` WordPress Environment

WC Version: 8.1.1<br>REST API Version: ? 8.1.1<br>WC Blocks Version: ? 10.9.3<br>Action Scheduler Version: ? 3.6.2<br>Log Directory Writable: ?<br>WP Version: 6.3.1<br>WP Multisite: –<br>WP Memory Limit: 1 GB<br>WP Debug Mode: ?<br>WP Cron: ?<br>Language: hu_HU<br>External object cache: – Server Environment

Server Info: LiteSpeed<br>PHP Version: 8.1.18<br>PHP Post Max Size: 1 GB<br>PHP Time Limit: 1200<br>PHP Max Input Vars: 5000<br>cURL Version: 7.87.0<br>OpenSSL/1.1.1p

SUHOSIN Installed: –<br>MySQL Version: 10.5.19-MariaDB-cll-lve<br>Max Upload Size: 512 MB<br>Default Timezone is UTC: ?<br>fsockopen/cURL: ?<br>SoapClient: ?<br>DOMDocument: ?<br>GZip: ?<br>Multibyte String: ?<br>Remote Post: ?<br>Remote Get: ? Database

WC Database Version: 8.1.1<br>WC Database Prefix: wp_ Security

Secure connection (HTTPS): ?<br>Hide errors from visitors: ? Active Plugins (3)

Booster Plus for WooCommerce: írta Pluggabl LLC – 7.1.1<br>Booster for WooCommerce: írta Pluggabl LLC – 7.1.2<br>WooCommerce: írta Automattic – 8.1.1 Dropin Plugins (1)

maintenance.php: maintenance.php Must Use Plugins (1)

Plugin Organizer MU: írta Jeff Sterup – 10.1.9 Settings

API Enabled: –<br>Force SSL: –<br>Currency: HUF (Ft)<br>Currency Position: right_space<br>Thousand Separator: ,<br>Decimal Separator: .<br>Number of Decimals: 2<br>Taxonomies: Product Types: external (external)<br>grouped (grouped)<br>simple (simple)<br>variable (variable)

Connected to WooCommerce.com: ?<br>Enforce Approved Product Download Directories: –<br>HPOS feature screen enabled: –<br>HPOS feature enabled: –<br>Order datastore: WC_Order_Data_Store_CPT<br>HPOS data sync enabled: – Theme

Name: Storefront<br>Version: 4.5.3<br>Author URL: https://woocommerce.com/<br>Child Theme: ?

WooCommerce Support: ? Templates

Overrides: – Status report information

Generated at: 2023-10-05 13:33:37 +02:00<br>`

Debug log:

[05-Oct-2023 11:05:55 UTC] The Automattic\WooCommerce\Admin\API\Options::get_options function is deprecated since version 6.3. [05-Oct-2023 11:05:55 UTC] The Automattic\WooCommerce\Admin\API\Options::get_options function is deprecated since version 6.3. [05-Oct-2023 11:05:56 UTC] The Automattic\WooCommerce\Admin\API\Options::get_options function is deprecated since version 6.3. [05-Oct-2023 11:05:56 UTC] The Automattic\WooCommerce\Admin\API\Options::get_options function is deprecated since version 6.3. [05-Oct-2023 11:18:07 UTC] PHP Warning: Attempt to read property “isValid” on null in /home/gallmetc/staging.absonic-ict.eu/wp-content/plugins/booster-plus-for-woocommerce/includes/functions/wcj-functions-eu-vat.php on line 62