The Amazon FBA/Oberlo/Dropshipping requires the individual SKUs not the Kits SKU. And the App does not break the kit into bundle components, so, the order will show that the customer has purchased a single product but not a bundle of products.
For example, Bundle A comprises of Products B, C and D. If someone orders the Bundle A, this will not break the order into 3 separate orders for B, C, and D.
Note: The line-items add-on does not break the bundle into component parts. The Line Item is for informational purpose only.