Generative design - not generating any answers and not letting me delete

I’ve got a graph in dynamo with a few python nodes (loops and stuff)…

It works fine in dynamo and previous versions worked ok in GD.

I’ve exported to GD with no issue but it’s been running for 2.5 hrs now and not a single outcome (I know there are loads and loads)…

I’ve reopened it and it’s let me pause it but it won’t let me delete the graph (the bin is greyed out).

Any ideas to how I can delete and why it’s not working?