You can run it, it's open source. But you won't get support and perhaps more critically you won't get patches. EAP 4.3CP02 is pretty specific, if you didn't get that version from you trial version you might not get support from you MES provider. And if they move versions to get some fix, you won't be able to get it.
Here are the details on the subscription
Thanks a lot for your answer John, that's what I expected