This tool currently compatible with Blender 3.6 and higher version. I will continue to work on making it compatible with future versions of Blender as well.

That is completely normal, because this geometry nodes has a lot of heavy nodes such as mesh boolean, so the computer needs some time to process and update them.

You can easily apply and export the spaceship mesh. However, material is Blender's exclusive shader mechanism, so I don't have an effective way to export it outside of Blender.