Hi LOFderKruiden67
I apologize for any inconvenience caused, but we weren't able to reproduce the issue.
So please, in order to make sure that this is not happening because any incompatibility, please, would you be so kind to deactivate all plugins except ATUM add-ons and Woocommerce and check again?
If it doesn't work, please, I have to ask you to open a private ticket and provide us with your website credentials in order to take a look.
This is the link to open the private ticket: https://stockmanagementlabs.ticksy.com/
Best Regards,
Andrea.