Hey sorry about not responding to this. Thesis writing is taking over my life.
@1621447326
This looks like a valid network file to me. So when you open the network.gml file with Cytoscape you don't get an error but just a blank canvas where the network should be? What do you see? I know with some versions of Cytoscape you can't really see the network until you tell it to space out the nodes. Have you tried hitting the Apply Preferred Layout button after loading the network into Cytoscape? That might make it so that you can see what the network looks like.
Mike