Worldline TIM Integration question

Hello, from time to time, I have the issue that The amount on my official Worldline receipt which I get by mail differs from the one in the Work Period Report in SambaPOS.

This happens once every 2 weeks.

The amount of the official Worldline document is ALWAYS higher (by 2-5€) than the amount which is on my Work Period report.

I didn’t have any complaints of customers who said being invoiced twice or not receiving their product. (yet)

Has somebody experienced this or similar behaviour with Worldline TIM or any other integration?