I suspect this is because there aren't compatible versions of those plugins available for the Neo4j 4.0.3. We should add clear messaging that explains why the plugins are not available.
the "Graph Data Science Library" has been updated. that should now be available for install.
"Graph Algorithms" is a deprecated library, which may not get updated
Cannot install another plugin except APOC. They are disabled. I use Neo4j 4.0.3