Cant equip bundles

So, I just bought the "Hide and Seek Collection" bundle, after I bought it, it said, "Sent to Your Company".

but after I open "Your Company" in the menu, I can't use Deadeye and Raubvogel Skin set, even there is no option to use them, but I can only use Bushwhacker for Churchill Gun Carrier.
Is there a way that I can use Deadeye and Raubvogel? or is mine the problem?

I'm sorry if my grammar is messy.