That’s why I’ve been developing FlexiBMS on my own time and money and not taking any pre-orders or orders before I can actually ship stuff.
You have assembled the new project boards and they’re working? Or are these some other test boards?
For PCB manufacturing they should only need the gerber-files, unless they also do assembly in which case they would also need BOM, fabrication layers and XY-coordinate file.
I’m assuming you only sent the minimal required files and no actual Kicad-project files?