That, I can't answer.
Again, the license would just prevent a station from running. You should still be able to connect and see in the App Director, and it would say that the JACE is not license to run a station.
That's why I'd do a dump and see what it spits out.
Did you try connecting to the Platform with 3.1? May be worth a try? At least the License version will match.
I Keep AX 3.0.99, 3.1.29, 3.1.30, and 3.3.22 running on my laptop for different jobs we've installed. I just run the platform daemon for whatever version I need to run before booting up that corresponding version.
Four wheel therapy, my 1968 Camaro is gone and will be missed