Problem importing 8bit .psd files in Studio 7

I use Studio, version 7.1. I draw my BG’s on krita and export them in 8bit .psd layered files, in order to be able to import them to Studio. Here is my problem. While I can import the file not layered and see it in me view, if I try to import it as a layered file - which is what I want to do - it only show one specific layer.
Let me say that I have created each layer also as an 8bit layer.
I use windows 10 (if that may help).
Any help would be really appreciated!