Hi Uniformstore ,
Apologies for any inconvenience caused.
Those tools only work for ATUM's calculated properties. They are shown on Stock Central and other ATUM pages.
Are these properties what get wrong values? Or are you talking about your products' stock levels?
FYI, ATUM FREE doesn't modify how WooCommerce works with stock management, so if the stock levels are affected, you should check if any additional plugin is causing the issue.
Best Regards,
José Andrés