It doesn’t work to set the feature image

Hi,
I am using this plugin for the first time. But I see that even if I can use the images from other websites in the network, I cannot do this to set the feature image.

I mean that the media box to search the images for the Feature Images doesn’t show the Network Shared Media.

So, at the end, I have to upload at least 1 image to more than 1 website, just that image to use as Feature Image.

is there a way to make work this plugin even for the Media Box to set the Feature Image?

Thanks for your support and for this plugin.

Kind regards

G. Aloe