Hi again @kvp
We were currently investigating this issue, and it's a weird thing but now we are not able to reproduce the issue in our servers.
So please, first accept my apologies again. And I have to ask you to open a private ticket and provide us with your website credentials in order to take look and fix the issue.
This is the link to open the private ticket: https://stockmanagementlabs.ticksy.com/tickets/