Selling bundles without approval

I have been purchasing a product directly from a manufacturer with invoices. I didn’t ask for permission to sell on Amazon but they also didn’t say it wasn’t allowed.

They recently decided that they want to sell on Amazon and advised all sellers that they do not have permission to sell on Amazon.

I sell a bundled product (manufacturers product + my own white label product).

Does anyone know if i can continue selling a bundle? I am guessing the manufacturer will cut me off but can i continue to sell until i run out of stock at least? I have proper invoices to prove its not counterfeit.